Problemset - Codeforces

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Codeforces Round #804 (Div. 2)
2 days

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Difficulty: —

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Problems

#	Name
1428H	Rotary Laser Lock binary search, interactive	3500	x62
1444E	Finding the Vertex brute force, dfs and similar, dp, interactive, trees	3500	x85
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x106
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x123
1147F	Zigzag Game games, interactive	3500	x159
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x189
1442F	Differentiating Games games, interactive	3400	x56
1158E	Strange device binary search, interactive, math, trees	3400	x77
1299E	So Mean interactive, math	3400	x106
1466I	The Riddle of the Sphinx binary search, data structures, data structures, interactive	3400	x119
1578I	Interactive Rays geometry, interactive	3300	x43
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x198
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x74
772E	Verifying Kingdom binary search, divide and conquer, interactive, trees	3200	x92
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x116
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3200	x144
1482G	Vabank binary search, interactive	3200	x169
1142E	Pink Floyd graphs, interactive	3200	x265
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x393
1499G	Graph Coloring data structures, graphs, interactive	3100	x135
1129E	Legendary Tree binary search, interactive, trees	3100	x295
1340E	Nastya and Bees graphs, interactive, probabilities	3000	x40
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x100
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x151
788D	Finding lines constructive algorithms, divide and conquer, interactive	3000	x243
1147E	Rainbow Coins interactive	3000	x255
1007C	Guess two numbers binary search, interactive	3000	x273
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x300
1028G	Guess the number dp, interactive	3000	x339
1438F	Olha and Igor interactive, probabilities, trees	3000	x352
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	3000	x384
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x93
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x234
1423M	Milutin's Plums interactive	2800	x106
1633F	Perfect Matching data structures, divide and conquer, interactive, trees	2800	x219
1291F	Coffee Varieties (easy version) graphs, interactive	2800	x283
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2800	x371
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2800	x395
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2800	x474
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x590
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x638
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x719
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x191
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x317
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x352
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x363
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x398
1491F	Magnets binary search, constructive algorithms, interactive	2700	x719
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x850
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1028
1090F	How to Learn You Score constructive algorithms, interactive	2600	x207
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x296
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x376
1354G	Find a Gift binary search, interactive, probabilities	2600	x519
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2600	x553
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x618
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x730
1406E	Deleting Numbers interactive, math, number theory	2600	x1237
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1602
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x239
1089C	Cactus Search interactive	2500	x323
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x763
1470C	Strange Shuffle binary search, brute force, constructive algorithms, interactive	2500	x1114
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x256
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x521
1061F	Lost Root interactive, probabilities	2400	x537
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x556
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x838
1137D	Cooperative Game constructive algorithms, interactive, number theory	2400	x992
1205C	Palindromic Paths implementation, interactive	2400	x1000
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1003
710F	String Set Queries brute force, data structures, hashing, interactive, string suffix structures, strings	2400	x1020
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2400	x1027
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1147
1617D2	Too Many Impostors (hard version) constructive algorithms, implementation, interactive, math	2400	x1332
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1069
1534E	Lost Array graphs, greedy, interactive, shortest paths	2300	x1528
1282D	Enchanted Artifact constructive algorithms, interactive, strings	2300	x1780
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x1801
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2342
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x2494
916D	Jamie and To-do List data structures, interactive, trees	2200	x371
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x937
1155E	Guess the Root brute force, interactive, math	2200	x1171
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1269
809B	Glad to see you! binary search, interactive	2200	x1290
1153E	Serval and Snake binary search, brute force, interactive	2200	x1295
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1340
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x1549
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x1669
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x1702
1535E	Gold Transfer binary search, data structures, dp, greedy, interactive, trees	2200	x2142
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2200	x2274
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x2441
1599H	Hidden Fortress interactive, math	2100	x785
811D	Vladik and Favorite Game constructive algorithms, dfs and similar, graphs, interactive	2100	x1310
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1704
1039B	Subway Pursuit binary search, interactive, probabilities	2100	x1921
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x2880
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x3409

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