Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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Problems

#	Name
1244G	Running in Pairs constructive algorithms, greedy, math	2400	x1261
457A	Golden System math, meet-in-the-middle	1700	x1261
238B	Boring Partition constructive algorithms	1800	x1261
111C	Petya and Spiders bitmasks, dp, dsu	2100	x1261
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1260
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1260
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1260
1237E	Balanced Binary Search Trees dp, math	2400	x1259
1594F	Ideal Farm constructive algorithms, math	2400	x1258
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
1211A	Three Problems *special problem, implementation	1000	x1258
1120D	Power Tree dfs and similar, dp, dsu, graphs, greedy, trees	2500	x1258
1917E	Construct Matrix constructive algorithms, math	2500	x1257
1662O	Circular Maze brute force, dfs and similar, graphs, implementation		x1257
1845E	Boxes and Balls dp, implementation, math	2500	x1256
1663H	Cross-Language Program *special problem, constructive algorithms		x1256
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1256
774K	Stepan and Vowels *special problem, implementation, strings	1600	x1256
1510G	Guide	2100	x1255
1479C	Continuous City bitmasks, constructive algorithms	2500	x1255
1374F	Cyclic Shifts Sorting brute force, constructive algorithms, implementation, sortings	2400	x1254
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1253
1101F	Trucks and Cities binary search, dp	2400	x1252
328B	Sheldon and Ice Pieces greedy	1500	x1252
201B	Guess That Car! math, ternary search	1800	x1252
903E	Swapping Characters brute force, hashing, implementation, strings	2200	x1250
251B	Playing with Permutations implementation, math	1800	x1249
411B	Multi-core Processor implementation	1600	x1248
765E	Tree Folding dfs and similar, dp, greedy, implementation, trees	2200	x1246
15B	Laser math	1800	x1246
436E	Cardboard Box data structures, greedy	2600	x1245
848C	Goodbye Souvenir data structures, divide and conquer	2600	x1244
691F	Couple Cover brute force, dp, number theory	2200	x1244
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1243
1090L	Berland University greedy, math	2000	x1243
171F	ucyhf *special problem, brute force, implementation, number theory	1600	x1243
1808E1	Minibuses on Venus (easy version) combinatorics, divide and conquer, dp	2200	x1242
54C	First Digit Law dp, math, probabilities	2000	x1242
1858E1	Rollbacks (Easy Version) brute force, data structures, dfs and similar, trees	2500	x1241
875F	Royal Questions dsu, graphs, greedy	2500	x1241
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1239
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1238
1571A	Sequence of Comparisons *special problem	800	x1236
32D	Constellation implementation	1600	x1236
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1235
1842F	Tenzing and Tree dfs and similar, greedy, shortest paths, sortings, trees	2500	x1234
1042F	Leaf Sets data structures, dfs and similar, dsu, graphs, greedy, sortings, trees	2400	x1234
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1231
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1231
277E	Binary Tree on Plane flows, trees	2400	x1231
793C	Mice problem geometry, implementation, math, sortings	2300	x1230
283C	Coin Troubles dp	2100	x1230
356C	Compartments combinatorics, constructive algorithms, greedy, implementation	2100	x1229
1736C2	Good Subarrays (Hard Version) binary search, data structures, dp, two pointers	2400	x1228
1343F	Restore the Permutation by Sorted Segments brute force, constructive algorithms, data structures, greedy, implementation	2400	x1228
1814E	Chain Chips data structures, dp, matrices	2300	x1227
1938C	Bit Counting Sequence	1900	x1226
660E	Different Subsets For All Tuples combinatorics, math	2300	x1224
938E	Max History combinatorics, math	2300	x1223
1575L	Longest Array Deconstruction data structures, divide and conquer, dp, sortings	2100	x1222
724E	Goods transportation dp, flows, greedy	2900	x1222
516D	Drazil and Morning Exercise dfs and similar, dp, dsu, trees, two pointers	2800	x1222
1443E	Long Permutation brute force, math, two pointers	2400	x1221
1812C	Digits *special problem		x1219
696D	Legen... data structures, dp, matrices, strings	2500	x1217
1584E	Game with Stones binary search, data structures, games, greedy	2300	x1215
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1215
645E	Intellectual Inquiry dp, greedy, strings	2200	x1215
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1214
1485E	Move and Swap dfs and similar, dp, greedy, trees	2500	x1213
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1213
818C	Sofa Thief brute force, implementation	2000	x1211
1446D2	Frequency Problem (Hard Version) data structures, greedy, two pointers	3000	x1210
1163D	Mysterious Code dp, strings	2100	x1210
813F	Bipartite Checking data structures, dsu, graphs	2500	x1210
700C	Break Up dfs and similar, graphs	2600	x1210
630Q	Pyramids geometry, math	1700	x1209
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1209
1252E	Songwriter greedy, two pointers	2200	x1208
24C	Sequence of points geometry, implementation, math	1800	x1208
690D2	The Wall (medium) combinatorics	1800	x1207
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1206
962F	Simple Cycles Edges dfs and similar, graphs, trees	2400	x1206
1005E2	Median on Segments (General Case Edition) sortings	2400	x1205
1320D	Reachable Strings data structures, hashing, strings	2500	x1204
371E	Subway Innovation greedy, math, two pointers	2000	x1203
113C	Double Happiness brute force, math, number theory	2200	x1201
1044C	Optimal Polygon Perimeter dp, geometry	2100	x1199
63D	Dividing Island constructive algorithms	1900	x1199
168B	Wizards and Minimal Spell implementation, strings	1700	x1198
1331E	Jordan Smiley *special problem, dfs and similar, geometry, implementation		x1197
958F2	Lightsabers (medium) binary search, two pointers	1800	x1197
1458C	Latin Square math, matrices	2700	x1196
648B	Собери стол constructive algorithms, sortings	800	x1195
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1194
1301E	Nanosoft binary search, data structures, dp, implementation	2500	x1194
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1193
420C	Bug in Code data structures, graphs, implementation, two pointers	1900	x1192
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