Problemset - Codeforces

→ Pay attention

Before contest
WorldQuant Round 1 (Codeforces Round 1128, Div. 1 + Div. 2)
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1510B	Button Lock flows, graph matchings, graphs	2600	x995
1510A	ASCII Automata Art	3100	x169
1509C	The Sports Festival dp, greedy	1800	x16413
1509B	TMT Document greedy	1100	x23473
1509A	Average Height constructive algorithms	800	x27606
1508F	Optimal Encoding brute force, data structures	3500	x194
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x493
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x769
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1846
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x4535
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6791
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x4986
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3805
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x14482
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x26488
1506C	Double-ended Strings brute force, implementation, strings	1000	x38981
1506B	Partial Replacement greedy, implementation	1100	x21356
1506A	Strange Table math	800	x33052
1505I	Mysterious language again, seriously? *special problem	2200	x618
1505H	L BREAK into program *special problem	2500	x576
1505G	Encoded message *special problem, implementation	2600	x377
1505F	Math *special problem, math	2200	x1615
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1937
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x899
1505C	Fibonacci Words *special problem, implementation	1400	x6744
1505B	DMCA *special problem, implementation, number theory	1600	x6591
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x16332
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x27996
1504A	Déjà Vu constructive algorithms, strings	800	x22977
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x244
1503E	2-Coloring combinatorics, dp, math	3100	x943
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x1329
1503C	Travelling Salesman Problem binary search, data structures, dp, greedy, shortest paths, sortings, two pointers	2200	x3968
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7792
1503A	Balance the Bits constructive algorithms, greedy	1600	x15091
1501B	Napoleon Cake dp, implementation, sortings	900	x21465
1501A	Alexey and Train implementation	800	x12518
1500F	Cupboards Jumps dp	3500	x512
1500E	Subset Trick binary search, data structures	3300	x433
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x652
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x989
1500B	Two chandeliers binary search, brute force, chinese remainder theorem, math, number theory	2200	x2403
1500A	Going Home brute force, hashing, implementation, math	1800	x9751
1499G	Graph Coloring data structures, graphs, interactive	3100	x406
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1765
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1723
1499D	The Number of Pairs dp, math, number theory	2100	x7457
1499C	Minimum Grid Path brute force, data structures, greedy, math	1500	x13618
1499B	Binary Removals brute force, dp, greedy, implementation	1000	x22284
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x22115
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x1135
1498E	Two Houses brute force, graphs, greedy, interactive, sortings	2200	x2198
1498D	Bananas in a Microwave dfs and similar, dp, graphs, implementation	2200	x2555
1498C	Planar Reflections brute force, data structures, dp	1600	x12883
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x25537
1498A	GCD Sum brute force, math	800	x25054
1497E2	Square-Free Division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1986
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x9250
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1803
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x19979
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x29923
1497B	M-arrays constructive algorithms, greedy, math	1200	x29871
1497A	Meximization brute force, data structures, greedy, sortings	800	x26618
1496B	Max and Mex math	1100	x18489
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x22527
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x559
1495E	Qingshan and Daniel brute force, data structures, greedy, implementation	3200	x551
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1633
1495C	Garden of the Sun constructive algorithms, graphs	2300	x2952
1495B	Let's Go Hiking games, greedy	1900	x6409
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x18078
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x600
1494E	A-Z Graph constructive algorithms, data structures, graphs, hashing	2400	x2125
1494D	Dogeforces constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees	2300	x2928
1494C	1D Sokoban binary search, dp, greedy, implementation, two pointers	1900	x5800
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x15550
1494A	ABC String bitmasks, brute force, implementation	900	x23154
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x534
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x1136
1493D	GCD of an Array brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers	2100	x5976
1493C	K-beautiful Strings binary search, brute force, constructive algorithms, greedy, strings	2000	x5044
1493B	Planet Lapituletti brute force, implementation	1300	x12653
1493A	Anti-knapsack constructive algorithms, greedy	800	x19867
1492E	Almost Fault-Tolerant Database brute force, constructive algorithms, dfs and similar, greedy, implementation	2500	x1338
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6582
1492C	Maximum width binary search, data structures, dp, greedy, two pointers	1500	x17800
1492B	Card Deck data structures, greedy, math	1100	x21308
1492A	Three swimmers math	800	x23533
1491I	Ruler Of The Zoo brute force, data structures	3500	x114
1491H	Yuezheng Ling and Dynamic Tree data structures, trees	3400	x1310
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x1107
1491F	Magnets binary search, constructive algorithms, interactive	2700	x1195
1491E	Fib-tree brute force, dfs and similar, divide and conquer, number theory, trees	2400	x2577
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x8653
1491C	Pekora and Trampoline brute force, data structures, dp, greedy, implementation	1700	x8508
1491B	Minimal Cost brute force, math	1200	x14344
1491A	K-th Largest Value brute force, greedy, implementation	800	x19185
1490G	Old Floppy Drive binary search, data structures, math	1900	x6347
1490F	Equalize the Array binary search, data structures, greedy, math, sortings	1500	x18953
1490E	Accidental Victory binary search, data structures, greedy	1400	x21577

The only programming contests Web 2.0 platform

Server time: Oct/15/2026 06:46:14 (g2).

Desktop version, switch to mobile version.

Supported by