#### Overview↵
↵
There are 1409603 rating changes in 792 rated contests (by 2018/07/14, including those mentioned in the "Something Weird" section). There are 142117 users with at least one rating change. The overall average of deltas is -6.671139.↵
↵
#### Rating Changes Distribution↵
↵
<img src="https://image.ibb.co/gZjnpJ/hist.png" width="90%"/>↵
<img src="https://image.ibb.co/jejnpJ/hist2.png" width="90%"/>↵
↵
(Well, it looks like a boa constrictor eating an elephant...)↵
↵
#### Top 20 Events: Positive Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th>Δ</th>↵
<th>Rating</th>↵
<th style="width: 25em;">Contest</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:Mhammad1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+803</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">-22</span> → <span style="font-weight:bold;" class="user-gray">781</span></td>↵
<td>[contest:814]</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:white_1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+756</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">522</span> → <span style="font-weight:bold;" class="user-green">1278</span></td>↵
<td>[contest:911]</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:Peregrine_Falcon,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+670</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">-12</span> → <span style="font-weight:bold;" class="user-gray">658</span></td>↵
<td>[contest:1005]</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:worse,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+644</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">230</span> → <span style="font-weight:bold;" class="user-gray">874</span></td>↵
<td>[contest:716]</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:alagneB_diK,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+638</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">637</span> → <span style="font-weight:bold;" class="user-green">1275</span></td>↵
<td>[contest:999]</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:.o.,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+548</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">872</span> → <span style="font-weight:bold;" class="user-cyan">1420</span></td>↵
<td>[contest:635]</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:rakhashov.maksat,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+535</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1088</span> → <span style="font-weight:bold;" class="user-blue">1623</span></td>↵
<td>[contest:599]</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:NelsonMondialu,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+526</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">310</span> → <span style="font-weight:bold;" class="user-gray">836</span></td>↵
<td>[contest:911]</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:my_new_handle,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+519</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">878</span> → <span style="font-weight:bold;" class="user-green">1397</span></td>↵
<td>[contest:898]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Spongebob_kz,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+474</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">238</span> → <span style="font-weight:bold;" class="user-gray">712</span></td>↵
<td>[contest:805]</td>↵
</tr>↵
<tr>↵
<td>11</td>↵
<td>[user:the_myth_1996,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+460</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1026</span> → <span style="font-weight:bold;" class="user-cyan">1486</span></td>↵
<td>[contest:999]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:S1mplest_gu1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+456</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">985</span> → <span style="font-weight:bold;" class="user-cyan">1441</span></td>↵
<td>[contest:988]</td>↵
</tr>↵
<tr>↵
<td>13</td>↵
<td>[user:cokamu,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+452</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">449</span> → <span style="font-weight:bold;" class="user-gray">901</span></td>↵
<td>[contest:979]</td>↵
</tr>↵
<tr>↵
<td>14</td>↵
<td>[user:CommonAnts,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+448</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1376</span> → <span style="font-weight:bold;" class="user-blue">1824</span></td>↵
<td>[contest:785]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:angoor,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+446</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">889</span> → <span style="font-weight:bold;" class="user-green">1335</span></td>↵
<td>[contest:707]</td>↵
</tr>↵
<tr>↵
<td>16</td>↵
<td>[user:mrloser,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+444</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1355</span> → <span style="font-weight:bold;" class="user-blue">1799</span></td>↵
<td>[contest:500]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:spec4r,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+440</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1315</span> → <span style="font-weight:bold;" class="user-blue">1755</span></td>↵
<td>[contest:922]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:Helli.code,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+440</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1110</span> → <span style="font-weight:bold;" class="user-cyan">1550</span></td>↵
<td>[contest:894]</td>↵
</tr>↵
<tr>↵
<td>19</td>↵
<td>[user:koamy,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+439</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1163</span> → <span style="font-weight:bold;" class="user-blue">1602</span></td>↵
<td>[contest:677]</td>↵
</tr>↵
<tr>↵
<td>20</td>↵
<td>[user:KellyL,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+434</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1374</span> → <span style="font-weight:bold;" class="user-blue">1808</span></td>↵
<td>[contest:964]</td>↵
</tr>↵
</table>↵
↵
#### Top 20 Events: Negative Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th>Δ</th>↵
<th>Rating</th>↵
<th style="width: 25em;">Contest</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:yosupo,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-336</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2709</span> → <span style="font-weight:bold;" class="user-orange">2373</span></td>↵
<td>[contest:768]</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:j_______________________,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-296</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2999</span> → <span style="font-weight:bold;" class="user-red">2703</span></td>↵
<td>[contest:725]</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:tourist,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-290</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3496</span> → <span style="font-weight:bold;" class="user-legendary">3206</span></td>↵
<td>[contest:947]</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:snuke,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-284</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2695</span> → <span style="font-weight:bold;" class="user-red">2411</span></td>↵
<td>[contest:855]</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:yosupo,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-263</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3113</span> → <span style="font-weight:bold;" class="user-red">2850</span></td>↵
<td>[contest:848]</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:King_George,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-255</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2263</span> → <span style="font-weight:bold;" class="user-violet">2008</span></td>↵
<td>[contest:914]</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:PavelKunyavskiy,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-253</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3097</span> → <span style="font-weight:bold;" class="user-red">2844</span></td>↵
<td>[contest:755]</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:AllCatsAreBeautiful,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-247</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2237</span> → <span style="font-weight:bold;" class="user-violet">1990</span></td>↵
<td>[contest:757]</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:V--o_o--V,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-240</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3271</span> → <span style="font-weight:bold;" class="user-legendary">3031</span></td>↵
<td>[contest:776]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Reyna,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-239</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2490</span> → <span style="font-weight:bold;" class="user-orange">2251</span></td>↵
<td>[contest:765]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:I_love_Tanya_Romanova,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-239</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2965</span> → <span style="font-weight:bold;" class="user-red">2726</span></td>↵
<td>[contest:855]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:Temirulan,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-238</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2445</span> → <span style="font-weight:bold;" class="user-orange">2207</span></td>↵
<td>[contest:755]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:Egor,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-238</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2935</span> → <span style="font-weight:bold;" class="user-red">2697</span></td>↵
<td>[contest:986]</td>↵
</tr>↵
<tr>↵
<td>14</td>↵
<td>[user:fukirk,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-235</span></td>↵
<td><span style="font-weight:bold;" class="user-cyan">1497</span> → <span style="font-weight:bold;" class="user-green">1262</span></td>↵
<td>[contest:65]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:vagnard,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-233</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2294</span> → <span style="font-weight:bold;" class="user-violet">2061</span></td>↵
<td>[contest:655]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:k__mas,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-233</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2199</span> → <span style="font-weight:bold;" class="user-violet">1966</span></td>↵
<td>[contest:799]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:enot110,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-232</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2880</span> → <span style="font-weight:bold;" class="user-red">2648</span></td>↵
<td>[contest:666]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:Fahim_Zubayer,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-cyan">1482</span> → <span style="font-weight:bold;" class="user-green">1251</span></td>↵
<td>[contest:65]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:King_George,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2449</span> → <span style="font-weight:bold;" class="user-orange">2218</span></td>↵
<td>[contest:765]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:eds467,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2824</span> → <span style="font-weight:bold;" class="user-red">2593</span></td>↵
<td>[contest:966]</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Users: Consecutive Positive Rating Changes↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th># consecutive</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:tourist,2018-07-16]</td>↵
<td>21</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:stormtrooper1859,2018-07-16]</td>↵
<td>15</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:RAD,2018-07-16]</td>↵
<td>14</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:xyz111,2018-07-16]</td>↵
<td>14</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:guoyu1098,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:KK_ndv,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:The_Unbeatable,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:Saiphani724,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:harshit_ag456,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:vepifanov,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Matei.Chirita,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Users: Consecutive Negative Rating Changes↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th># consecutive</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:worse,2018-07-16]</td>↵
<td>31</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:Mhammad1,2018-07-16]</td>↵
<td>25</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:ahmed_25,2018-07-16]</td>↵
<td>22</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:newbie314159,2018-07-16]</td>↵
<td>21</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:NelsonMondialu,2018-07-16]</td>↵
<td>19</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:.o.,2018-07-16]</td>↵
<td>18</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:Peregrine_Falcon,2018-07-16]</td>↵
<td>18</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:Adai_is,2018-07-16]</td>↵
<td>17</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:THton,2018-07-16]</td>↵
<td>17</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:MisterMax,2018-07-16]</td>↵
<td>16</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Contests: Positive Averaged Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th style="width: 25em;">Contest</th>↵
<th>Avg. Δ</th>↵
<th># participants</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[contest:67]</td>↵
<td>34.309</td>↵
<td>745</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[contest:117]</td>↵
<td>21.053</td>↵
<td>1103</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[contest:105]</td>↵
<td>20.353</td>↵
<td>1034</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[contest:115]</td>↵
<td>16.067</td>↵
<td>416</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[contest:121]</td>↵
<td>15.448</td>↵
<td>420</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[contest:123]</td>↵
<td>15.140</td>↵
<td>365</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[contest:111]</td>↵
<td>14.957</td>↵
<td>398</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[contest:107]</td>↵
<td>14.909</td>↵
<td>351</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[contest:113]</td>↵
<td>14.389</td>↵
<td>355</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[contest:120]</td>↵
<td>14.331</td>↵
<td>580</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Contests: Negative Averaged Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th style="width: 25em;">Contest</th>↵
<th>Avg. Δ</th>↵
<th># participants</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[contest:174]</td>↵
<td>-31.142</td>↵
<td>643</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[contest:169]</td>↵
<td>-28.747</td>↵
<td>707</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[contest:181]</td>↵
<td>-27.681</td>↵
<td>627</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[contest:165]</td>↵
<td>-27.462</td>↵
<td>1518</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[contest:166]</td>↵
<td>-26.989</td>↵
<td>1443</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[contest:584]</td>↵
<td>-20.562</td>↵
<td>4333</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[contest:176]</td>↵
<td>-20.151</td>↵
<td>338</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[contest:168]</td>↵
<td>-19.963</td>↵
<td>1395</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[contest:588]</td>↵
<td>-18.719</td>↵
<td>3838</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[contest:583]</td>↵
<td>-18.305</td>↵
<td>4728</td>↵
</tr>↵
</table>↵
↵
#### Rating: Sum, Average, Standard Deviation and Skewness↵
↵
<img src="https://image.ibb.co/cTHwidbTkcpJ/all1_1.png" width="90%"/>↵
<img src="https://image.ibb.co/bJ4ywy/all1_2.png" width="90%"/>↵
<img src="https://image.ibb.co/hnrp3dik3V9J/all2_1.png" width="90%"/>↵
<img src="https://image.ibb.co/ktoDUJ/all2_2.png" width="90%"/>↵
↵
A user is included in the sum only after their first participation in a contest.<br>Note that we can observe changes of rating system ([November 2011](http://codeforces.com/blog/entry/3064) and [October 2015](http://codeforces.com/blog/entry/20762)) on the graph.↵
↵
(I wondered if there were changes in March 2012, since the top 5 contests with most negative average delta are all in March or April 2012. However, I didn't find any related posts.)↵
↵
#### Something Weird↵
1. In [contest:447], [user:kasim,2018-07-16] appeared in both #1095 and #1986.↵
2. In [contest:472], [user:yuki2006,2018-07-16] appeared in both #2876 and #3520; [user:a00920,2018-07-16] appeared in both #1097 and #3602.↵
3. In [contest:615], [user:bohuss,2018-07-16] appeared in both #256 and #3477; [user:InnocentFool,2018-07-16] appeared in both #555 and #3477; [user:elgris,2018-07-16] appeared in both #884 and #3477; [user:Altitude,2018-07-16] appeared in both #2439 and #3477; [user:mohamedazab,2018-07-16] appeared in both #2831 and #3477. (Such a buggy round?)↵
4. In [contest:457], [user:FreezingCool,2018-07-16] had a rating change of +5, but it wasn't displayed on the user page. (Can somebody explain why max rating is smaller than contest rating?)↵
5. In [contest:904], [user:ilya140101,2018-07-16] had a rating change of -83. However, it seems that the rating is not actually changed. After that, his ratings displayed on "contest rating" and "rating change" in contest pages was 83 higher than those on the user history graph.↵
6. In contest pages, ratings less than 100 are displayed as 100. 8 users have been affected: [user:worse,2018-07-16], [user:MisterMax,2018-07-16], [user:newbie314159,2018-07-16], [user:errorerror,2018-07-16], [user:Mhammad1,2018-07-16], [user:KHOKHO_IS_N00B,2018-07-16], [user:Peregrine_Falcon,2018-07-16] and [user:NIKABB_IS_N00B_LIKE_ME,2018-07-16].↵
7. [https://codeforces.com/contests/1004](https://codeforces.com/contests/1004) ([contest:1004]) is redirected to [https://codeforces.com/contests/1002](https://codeforces.com/contests/1002) ([contest:1002]).
↵
There are 1409603 rating changes in 792 rated contests (by 2018/07/14, including those mentioned in the "Something Weird" section). There are 142117 users with at least one rating change. The overall average of deltas is -6.671139.↵
↵
#### Rating Changes Distribution↵
↵
<img src="https://image.ibb.co/gZjnpJ/hist.png" width="90%"/>↵
<img src="https://image.ibb.co/jejnpJ/hist2.png" width="90%"/>↵
↵
(Well, it looks like a boa constrictor eating an elephant...)↵
↵
#### Top 20 Events: Positive Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th>Δ</th>↵
<th>Rating</th>↵
<th style="width: 25em;">Contest</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:Mhammad1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+803</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">-22</span> → <span style="font-weight:bold;" class="user-gray">781</span></td>↵
<td>[contest:814]</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:white_1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+756</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">522</span> → <span style="font-weight:bold;" class="user-green">1278</span></td>↵
<td>[contest:911]</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:Peregrine_Falcon,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+670</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">-12</span> → <span style="font-weight:bold;" class="user-gray">658</span></td>↵
<td>[contest:1005]</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:worse,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+644</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">230</span> → <span style="font-weight:bold;" class="user-gray">874</span></td>↵
<td>[contest:716]</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:alagneB_diK,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+638</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">637</span> → <span style="font-weight:bold;" class="user-green">1275</span></td>↵
<td>[contest:999]</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:.o.,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+548</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">872</span> → <span style="font-weight:bold;" class="user-cyan">1420</span></td>↵
<td>[contest:635]</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:rakhashov.maksat,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+535</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1088</span> → <span style="font-weight:bold;" class="user-blue">1623</span></td>↵
<td>[contest:599]</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:NelsonMondialu,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+526</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">310</span> → <span style="font-weight:bold;" class="user-gray">836</span></td>↵
<td>[contest:911]</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:my_new_handle,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+519</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">878</span> → <span style="font-weight:bold;" class="user-green">1397</span></td>↵
<td>[contest:898]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Spongebob_kz,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+474</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">238</span> → <span style="font-weight:bold;" class="user-gray">712</span></td>↵
<td>[contest:805]</td>↵
</tr>↵
<tr>↵
<td>11</td>↵
<td>[user:the_myth_1996,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+460</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1026</span> → <span style="font-weight:bold;" class="user-cyan">1486</span></td>↵
<td>[contest:999]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:S1mplest_gu1,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+456</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">985</span> → <span style="font-weight:bold;" class="user-cyan">1441</span></td>↵
<td>[contest:988]</td>↵
</tr>↵
<tr>↵
<td>13</td>↵
<td>[user:cokamu,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+452</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">449</span> → <span style="font-weight:bold;" class="user-gray">901</span></td>↵
<td>[contest:979]</td>↵
</tr>↵
<tr>↵
<td>14</td>↵
<td>[user:CommonAnts,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+448</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1376</span> → <span style="font-weight:bold;" class="user-blue">1824</span></td>↵
<td>[contest:785]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:angoor,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+446</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">889</span> → <span style="font-weight:bold;" class="user-green">1335</span></td>↵
<td>[contest:707]</td>↵
</tr>↵
<tr>↵
<td>16</td>↵
<td>[user:mrloser,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+444</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1355</span> → <span style="font-weight:bold;" class="user-blue">1799</span></td>↵
<td>[contest:500]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:spec4r,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+440</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1315</span> → <span style="font-weight:bold;" class="user-blue">1755</span></td>↵
<td>[contest:922]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:Helli.code,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+440</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1110</span> → <span style="font-weight:bold;" class="user-cyan">1550</span></td>↵
<td>[contest:894]</td>↵
</tr>↵
<tr>↵
<td>19</td>↵
<td>[user:koamy,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+439</span></td>↵
<td><span style="font-weight:bold;" class="user-gray">1163</span> → <span style="font-weight:bold;" class="user-blue">1602</span></td>↵
<td>[contest:677]</td>↵
</tr>↵
<tr>↵
<td>20</td>↵
<td>[user:KellyL,2018-07-16]</td>↵
<td><span style="color:green;font-weight:bold;">+434</span></td>↵
<td><span style="font-weight:bold;" class="user-green">1374</span> → <span style="font-weight:bold;" class="user-blue">1808</span></td>↵
<td>[contest:964]</td>↵
</tr>↵
</table>↵
↵
#### Top 20 Events: Negative Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th>Δ</th>↵
<th>Rating</th>↵
<th style="width: 25em;">Contest</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:yosupo,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-336</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2709</span> → <span style="font-weight:bold;" class="user-orange">2373</span></td>↵
<td>[contest:768]</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:j_______________________,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-296</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2999</span> → <span style="font-weight:bold;" class="user-red">2703</span></td>↵
<td>[contest:725]</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:tourist,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-290</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3496</span> → <span style="font-weight:bold;" class="user-legendary">3206</span></td>↵
<td>[contest:947]</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:snuke,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-284</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2695</span> → <span style="font-weight:bold;" class="user-red">2411</span></td>↵
<td>[contest:855]</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:yosupo,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-263</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3113</span> → <span style="font-weight:bold;" class="user-red">2850</span></td>↵
<td>[contest:848]</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:King_George,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-255</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2263</span> → <span style="font-weight:bold;" class="user-violet">2008</span></td>↵
<td>[contest:914]</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:PavelKunyavskiy,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-253</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3097</span> → <span style="font-weight:bold;" class="user-red">2844</span></td>↵
<td>[contest:755]</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:AllCatsAreBeautiful,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-247</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2237</span> → <span style="font-weight:bold;" class="user-violet">1990</span></td>↵
<td>[contest:757]</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:V--o_o--V,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-240</span></td>↵
<td><span style="font-weight:bold;" class="user-legendary">3271</span> → <span style="font-weight:bold;" class="user-legendary">3031</span></td>↵
<td>[contest:776]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Reyna,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-239</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2490</span> → <span style="font-weight:bold;" class="user-orange">2251</span></td>↵
<td>[contest:765]</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:I_love_Tanya_Romanova,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-239</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2965</span> → <span style="font-weight:bold;" class="user-red">2726</span></td>↵
<td>[contest:855]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:Temirulan,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-238</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2445</span> → <span style="font-weight:bold;" class="user-orange">2207</span></td>↵
<td>[contest:755]</td>↵
</tr>↵
<tr>↵
<td>12</td>↵
<td>[user:Egor,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-238</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2935</span> → <span style="font-weight:bold;" class="user-red">2697</span></td>↵
<td>[contest:986]</td>↵
</tr>↵
<tr>↵
<td>14</td>↵
<td>[user:fukirk,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-235</span></td>↵
<td><span style="font-weight:bold;" class="user-cyan">1497</span> → <span style="font-weight:bold;" class="user-green">1262</span></td>↵
<td>[contest:65]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:vagnard,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-233</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2294</span> → <span style="font-weight:bold;" class="user-violet">2061</span></td>↵
<td>[contest:655]</td>↵
</tr>↵
<tr>↵
<td>15</td>↵
<td>[user:k__mas,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-233</span></td>↵
<td><span style="font-weight:bold;" class="user-orange">2199</span> → <span style="font-weight:bold;" class="user-violet">1966</span></td>↵
<td>[contest:799]</td>↵
</tr>↵
<tr>↵
<td>17</td>↵
<td>[user:enot110,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-232</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2880</span> → <span style="font-weight:bold;" class="user-red">2648</span></td>↵
<td>[contest:666]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:Fahim_Zubayer,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-cyan">1482</span> → <span style="font-weight:bold;" class="user-green">1251</span></td>↵
<td>[contest:65]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:King_George,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2449</span> → <span style="font-weight:bold;" class="user-orange">2218</span></td>↵
<td>[contest:765]</td>↵
</tr>↵
<tr>↵
<td>18</td>↵
<td>[user:eds467,2018-07-16]</td>↵
<td><span style="color:gray;font-weight:bold;">-231</span></td>↵
<td><span style="font-weight:bold;" class="user-red">2824</span> → <span style="font-weight:bold;" class="user-red">2593</span></td>↵
<td>[contest:966]</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Users: Consecutive Positive Rating Changes↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th># consecutive</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:tourist,2018-07-16]</td>↵
<td>21</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:stormtrooper1859,2018-07-16]</td>↵
<td>15</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:RAD,2018-07-16]</td>↵
<td>14</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:xyz111,2018-07-16]</td>↵
<td>14</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:guoyu1098,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:KK_ndv,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:The_Unbeatable,2018-07-16]</td>↵
<td>13</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:Saiphani724,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:harshit_ag456,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:vepifanov,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:Matei.Chirita,2018-07-16]</td>↵
<td>12</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Users: Consecutive Negative Rating Changes↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th>Who</th>↵
<th># consecutive</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[user:worse,2018-07-16]</td>↵
<td>31</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[user:Mhammad1,2018-07-16]</td>↵
<td>25</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[user:ahmed_25,2018-07-16]</td>↵
<td>22</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[user:newbie314159,2018-07-16]</td>↵
<td>21</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[user:NelsonMondialu,2018-07-16]</td>↵
<td>19</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[user:.o.,2018-07-16]</td>↵
<td>18</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[user:Peregrine_Falcon,2018-07-16]</td>↵
<td>18</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[user:Adai_is,2018-07-16]</td>↵
<td>17</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[user:THton,2018-07-16]</td>↵
<td>17</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[user:MisterMax,2018-07-16]</td>↵
<td>16</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Contests: Positive Averaged Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th style="width: 25em;">Contest</th>↵
<th>Avg. Δ</th>↵
<th># participants</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[contest:67]</td>↵
<td>34.309</td>↵
<td>745</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[contest:117]</td>↵
<td>21.053</td>↵
<td>1103</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[contest:105]</td>↵
<td>20.353</td>↵
<td>1034</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[contest:115]</td>↵
<td>16.067</td>↵
<td>416</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[contest:121]</td>↵
<td>15.448</td>↵
<td>420</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[contest:123]</td>↵
<td>15.140</td>↵
<td>365</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[contest:111]</td>↵
<td>14.957</td>↵
<td>398</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[contest:107]</td>↵
<td>14.909</td>↵
<td>351</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[contest:113]</td>↵
<td>14.389</td>↵
<td>355</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[contest:120]</td>↵
<td>14.331</td>↵
<td>580</td>↵
</tr>↵
</table>↵
↵
#### Top 10 Contests: Negative Averaged Rating Change↵
↵
<table>↵
<tr>↵
<th>#</th>↵
<th style="width: 25em;">Contest</th>↵
<th>Avg. Δ</th>↵
<th># participants</th>↵
</tr>↵
<tr>↵
<td>1</td>↵
<td>[contest:174]</td>↵
<td>-31.142</td>↵
<td>643</td>↵
</tr>↵
<tr>↵
<td>2</td>↵
<td>[contest:169]</td>↵
<td>-28.747</td>↵
<td>707</td>↵
</tr>↵
<tr>↵
<td>3</td>↵
<td>[contest:181]</td>↵
<td>-27.681</td>↵
<td>627</td>↵
</tr>↵
<tr>↵
<td>4</td>↵
<td>[contest:165]</td>↵
<td>-27.462</td>↵
<td>1518</td>↵
</tr>↵
<tr>↵
<td>5</td>↵
<td>[contest:166]</td>↵
<td>-26.989</td>↵
<td>1443</td>↵
</tr>↵
<tr>↵
<td>6</td>↵
<td>[contest:584]</td>↵
<td>-20.562</td>↵
<td>4333</td>↵
</tr>↵
<tr>↵
<td>7</td>↵
<td>[contest:176]</td>↵
<td>-20.151</td>↵
<td>338</td>↵
</tr>↵
<tr>↵
<td>8</td>↵
<td>[contest:168]</td>↵
<td>-19.963</td>↵
<td>1395</td>↵
</tr>↵
<tr>↵
<td>9</td>↵
<td>[contest:588]</td>↵
<td>-18.719</td>↵
<td>3838</td>↵
</tr>↵
<tr>↵
<td>10</td>↵
<td>[contest:583]</td>↵
<td>-18.305</td>↵
<td>4728</td>↵
</tr>↵
</table>↵
↵
#### Rating: Sum, Average, Standard Deviation and Skewness↵
↵
<img src="https://image.ibb.co/
<img src="https://image.ibb.co/bJ4ywy/all1_2.png" width="90%"/>↵
<img src="https://image.ibb.co/
<img src="https://image.ibb.co/ktoDUJ/all2_2.png" width="90%"/>↵
↵
A user is included in the sum only after their first participation in a contest.<br>Note that we can observe changes of rating system ([November 2011](http://codeforces.com/blog/entry/3064) and [October 2015](http://codeforces.com/blog/entry/20762)) on the graph.↵
↵
(I wondered if there were changes in March 2012, since the top 5 contests with most negative average delta are all in March or April 2012. However, I didn't find any related posts.)↵
↵
#### Something Weird↵
1. In [contest:447], [user:kasim,2018-07-16] appeared in both #1095 and #1986.↵
2. In [contest:472], [user:yuki2006,2018-07-16] appeared in both #2876 and #3520; [user:a00920,2018-07-16] appeared in both #1097 and #3602.↵
3. In [contest:615], [user:bohuss,2018-07-16] appeared in both #256 and #3477; [user:InnocentFool,2018-07-16] appeared in both #555 and #3477; [user:elgris,2018-07-16] appeared in both #884 and #3477; [user:Altitude,2018-07-16] appeared in both #2439 and #3477; [user:mohamedazab,2018-07-16] appeared in both #2831 and #3477. (Such a buggy round?)↵
4. In [contest:457], [user:FreezingCool,2018-07-16] had a rating change of +5, but it wasn't displayed on the user page. (Can somebody explain why max rating is smaller than contest rating?)↵
5. In [contest:904], [user:ilya140101,2018-07-16] had a rating change of -83. However, it seems that the rating is not actually changed. After that, his ratings displayed on "contest rating" and "rating change" in contest pages was 83 higher than those on the user history graph.↵
6. In contest pages, ratings less than 100 are displayed as 100. 8 users have been affected: [user:worse,2018-07-16], [user:MisterMax,2018-07-16], [user:newbie314159,2018-07-16], [user:errorerror,2018-07-16], [user:Mhammad1,2018-07-16], [user:KHOKHO_IS_N00B,2018-07-16], [user:Peregrine_Falcon,2018-07-16] and [user:NIKABB_IS_N00B_LIKE_ME,2018-07-16].↵
7. [https://codeforces.com/contests/1004](https://codeforces.com/contests/1004) ([contest:1004]) is redirected to [https://codeforces.com/contests/1002](https://codeforces.com/contests/1002) ([contest:1002]).
