Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 878 (Div. 3)
24:30:49
Register now »

→ Filter Problems

Difficulty: —

interactive

Add tag

Problems

#	Name
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x12872
1546B	AquaMoon and Stolen String interactive, math	1200	x12215
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x10796
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x10567
1486C1	Guessing the Greatest (easy version) binary search, interactive	1600	x10422
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x10215
1479A	Searching Local Minimum binary search, interactive, ternary search	1700	x10124
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x9473
1167B	Lost Numbers brute force, divide and conquer, interactive, math	1400	x9394
1807E	Interview binary search, implementation, interactive	1300	x8935
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x7660
1486C2	Guessing the Greatest (hard version) binary search, interactive	1900	x7281
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7061
1503B	3-Coloring constructive algorithms, games, interactive	1700	x6487
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x6268
727C	Guess the Array constructive algorithms, interactive, math	1400	x6020
1729E	Guess the Cycle Size interactive, probabilities	1800	x5890
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x5661
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x5511
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x5265
1207E	XOR Guessing bitmasks, interactive, math	1900	x5133
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5019
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x4907
1010B	Rocket binary search, interactive	1800	x4790
1425F	Flamingoes of Mystery interactive	1400	x4440
1305D	Kuroni and the Celebration constructive algorithms, dfs and similar, interactive, trees	1900	x4436
1270D	Strange Device constructive algorithms, interactive, math, sortings	1900	x4236
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4156
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4055
1634D	Finding Zero constructive algorithms, interactive, math	2000	x3904
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x3846
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x3838
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x3815
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x3625
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x3219
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3206
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3205
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3119
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x3065
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3040
1624F	Interacdive Problem binary search, constructive algorithms, interactive	2000	x2828
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x2806
1762D	GCD Queries constructive algorithms, interactive, number theory	2100	x2708
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x2652
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x2643
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2572
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2200	x2493
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2456
1535E	Gold Transfer binary search, data structures, dp, greedy, interactive, trees	2200	x2370
730B	Minimum and Maximum constructive algorithms, interactive	1800	x2271
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x2252
1056C	Pick Heroes greedy, implementation, interactive, sortings	1700	x2171
1033D	Divisors interactive, math, number theory	2000	x2162
1039B	Subway Pursuit binary search, interactive, probabilities	2100	x2114
843B	Interactive LowerBound brute force, interactive, probabilities	2000	x2008
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x1984
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x1919
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x1904
1282D	Enchanted Artifact constructive algorithms, interactive, strings	2300	x1887
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1845
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x1836
952B	A Map of the Cat brute force, interactive	1900	x1830
1019B	The hat binary search, interactive	2000	x1817
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1756
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x1675
1534E	Lost Array graphs, greedy, interactive, shortest paths	2300	x1659
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1632
862D	Mahmoud and Ehab and the binary string binary search, divide and conquer, interactive	2000	x1580
1617D2	Too Many Impostors (hard version) constructive algorithms, implementation, interactive, math	2400	x1526
1044B	Intersecting Subtrees dfs and similar, interactive, trees	1900	x1489
1779E	Anya's Simultaneous Exhibition constructive algorithms, graphs, greedy, interactive, sortings	2400	x1455
811D	Vladik and Favorite Game constructive algorithms, dfs and similar, graphs, interactive	2100	x1425
809B	Glad to see you! binary search, interactive	2200	x1387
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1372
1153E	Serval and Snake binary search, brute force, interactive	2200	x1351
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1345
1406E	Deleting Numbers interactive, math, number theory	2600	x1332
1155E	Guess the Root brute force, interactive, math	2200	x1282
710F	String Set Queries brute force, data structures, hashing, interactive, string suffix structures, strings	2400	x1272
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1233
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1224
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2400	x1223
1470C	Strange Shuffle binary search, brute force, constructive algorithms, interactive	2500	x1210
1137D	Cooperative Game constructive algorithms, interactive, number theory	2400	x1168
1746E1	Joking (Easy Version) binary search, constructive algorithms, interactive, ternary search	2500	x1165
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1143
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1137
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1108
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1089
1205C	Palindromic Paths implementation, interactive	2400	x1056
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x1013
1738F	Connectivity Addicts constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees	2400	x1012
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x959
1599H	Hidden Fortress interactive, math	2100	x898
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x849
1491F	Magnets binary search, constructive algorithms, interactive	2700	x820
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x802
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x785
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x781
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x709

←