Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
28:08:26
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Before contest
Codeforces Round 941 (Div. 2)
28:08:26
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Problems

#	Name
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1388
232B	Table bitmasks, combinatorics, dp, math	1900	x1386
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1385
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1384
382B	Number Busters binary search, math	2000	x1383
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1381
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1380
550E	Brackets in Implications constructive algorithms, greedy, implementation, math	2200	x1376
901B	GCD of Polynomials constructive algorithms, math	2200	x1373
1170A	Three Integers Again *special problem, math		x1365
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1361
261B	Maxim and Restaurant dp, math, probabilities	1900	x1360
1838E	Count Supersequences combinatorics, dp, math	2500	x1356
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x1356
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1348
1726E	Almost Perfect combinatorics, fft, math	2400	x1347
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1347
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1346
86A	Reflection math	1600	x1339
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1335
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1334
1488A	From Zero To Y *special problem, math	900	x1332
303B	Rectangle Puzzle II implementation, math	1700	x1329
1156F	Card Bag dp, math, probabilities	2300	x1326
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1320
1039C	Network Safety dfs and similar, dsu, graphs, math, sortings	2200	x1311
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1309
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1301
87C	Interesting Game dp, games, math	2000	x1301
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1297
21B	Intersection implementation, math	2000	x1297
73A	The Elder Trolls IV: Oblivon greedy, math	1600	x1296
626E	Simple Skewness binary search, math, ternary search	2400	x1292
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1291
1912D	Divisibility Test math	1900	x1288
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1285
961G	Partitions combinatorics, math, number theory	2700	x1283
925C	Big Secret constructive algorithms, math	2200	x1282
818F	Level Generation binary search, math, ternary search	2100	x1282
908G	New Year and Original Order dp, math	2800	x1280
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1277
698C	LRU bitmasks, dp, math, probabilities	2400	x1273
139B	Wallpaper implementation, math	1600	x1273
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1267
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1264
1244G	Running in Pairs constructive algorithms, greedy, math	2400	x1261
457A	Golden System math, meet-in-the-middle	1700	x1261
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1260
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1260
1237E	Balanced Binary Search Trees dp, math	2400	x1260
1917E	Construct Matrix constructive algorithms, math	2500	x1258
1845E	Boxes and Balls dp, implementation, math	2500	x1258
1594F	Ideal Farm constructive algorithms, math	2400	x1258
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1254
201B	Guess That Car! math, ternary search	1800	x1252
251B	Playing with Permutations implementation, math	1800	x1249
15B	Laser math	1800	x1247
1090L	Berland University greedy, math	2000	x1243
54C	First Digit Law dp, math, probabilities	2000	x1242
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1239
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1234
793C	Mice problem geometry, implementation, math, sortings	2300	x1230
660E	Different Subsets For All Tuples combinatorics, math	2300	x1225
1443E	Long Permutation brute force, math, two pointers	2400	x1223
938E	Max History combinatorics, math	2300	x1223
630Q	Pyramids geometry, math	1700	x1209
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1209
24C	Sequence of points geometry, implementation, math	1800	x1208
371E	Subway Innovation greedy, math, two pointers	2000	x1203
113C	Double Happiness brute force, math, number theory	2200	x1201
1458C	Latin Square math, matrices	2700	x1197
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1190
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1189
1677D	Tokitsukaze and Permutations dp, math	2500	x1189
639C	Bear and Polynomials hashing, implementation, math	2200	x1187
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1182
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1181
772C	Vulnerable Kerbals constructive algorithms, dp, graphs, math, number theory	2300	x1181
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1180
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1179
1712E2	LCM Sum (hard version) brute force, data structures, math, number theory, two pointers	2500	x1179
593D	Happy Tree Party data structures, dfs and similar, graphs, math, trees	2400	x1178
1554E	You dfs and similar, dp, math, number theory	2600	x1176
336B	Vasily the Bear and Fly math	1900	x1176
1437F	Emotional Fishermen combinatorics, dp, math, two pointers	2600	x1162
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1158
710D	Two Arithmetic Progressions math, number theory	2500	x1153
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1151
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1150
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x1149
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1143
929C	Красивая команда *special problem, combinatorics, math	1700	x1141
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1135
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1135
915G	Coprime Arrays math, number theory	2300	x1125
906B	Seating of Students brute force, constructive algorithms, math	2200	x1121
898F	Restoring the Expression brute force, hashing, math	2300	x1121
995F	Cowmpany Cowmpensation combinatorics, dp, math, trees	2700	x1119
1680D	Dog Walking brute force, greedy, math	2400	x1110