Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Kotlin Heroes: Episode 11
05:07:59
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1169B	Pairs graphs, implementation	1500	x9728
1168A	Increasing by Modulo binary search, greedy	1700	x6813
1167D	Bicolored RBS constructive algorithms, greedy	1500	x6952
1167C	News Distribution dfs and similar, dsu, graphs	1400	x18317
1167B	Lost Numbers brute force, divide and conquer, interactive, math	1400	x11634
1166C	A Tale of Two Lands binary search, sortings, two pointers	1500	x9600
1165E	Two Arrays and Sum of Functions greedy, math, sortings	1600	x8296
1165D	Almost All Divisors math, number theory	1600	x15990
1163B2	Cat Party (Hard Edition) data structures, implementation	1600	x7216
1163B1	Cat Party (Easy Edition) data structures, implementation	1500	x6967
1162B	Double Matrix brute force, greedy	1400	x5801
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x7106
1157E	Minimum Array binary search, data structures, greedy	1700	x8368
1157C2	Increasing Subsequence (hard version) greedy	1700	x7984
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6221
1156A	Inscribed Figures geometry	1400	x8202
1154E	Two Teams data structures, implementation, sortings	1800	x6262
1154D	Walking Robot greedy	1500	x9946
1154C	Gourmet Cat implementation, math	1400	x10385
1153C	Serval and Parenthesis Sequence greedy, strings	1700	x7395
1152C	Neko does Maths brute force, math, number theory	1800	x6663
1151D	Stas and the Queue at the Buffet greedy, math, sortings	1600	x8399
1151C	Problem for Nazar constructive algorithms, math	1800	x5339
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x11155
1148D	Dirty Deeds Done Dirt Cheap greedy, sortings	1800	x4972
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5296
1148B	Born This Way binary search, brute force, two pointers	1600	x7383
1147A	Hide and Seek graphs	1500	x5244
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3687
1144F	Graph Without Long Directed Paths dfs and similar, graphs	1700	x11592
1144D	Equalize Them All constructive algorithms, greedy	1400	x10261
1143C	Queen dfs and similar, trees	1400	x12353
1142A	The Beatles brute force, math	1700	x3419
1141E	Superhero Battle math	1700	x6735
1141D	Colored Boots greedy, implementation	1500	x8528
1141C	Polycarp Restores Permutation math	1500	x11446
1140C	Playlist brute force, data structures, sortings	1600	x9552
1139C	Edgy Trees dfs and similar, dsu, graphs, math, trees	1500	x12581
1138B	Circus brute force, greedy, math, strings	1800	x4023
1137B	Camp Schedule greedy, hashing, strings	1600	x6135
1137A	Skyscrapers implementation, sortings	1600	x4465
1136D	Nastya Is Buying Lunch greedy	1800	x3811
1136C	Nastya Is Transposing Matrices constructive algorithms, sortings	1500	x7708
1133F1	Spanning Tree with Maximum Degree graphs	1600	x7798
1133E	K Balanced Teams dp, sortings, two pointers	1800	x5465
1133D	Zero Quantity Maximization hashing, math, number theory	1500	x11771
1132C	Painting the Fence brute force	1700	x5427
1131F	Asya And Kittens constructive algorithms, dsu	1700	x6662
1131B	Draw! greedy, implementation	1400	x9721
1130C	Connect brute force, dfs and similar, dsu	1400	x8576
1129A2	Toy Train brute force, greedy	1800	x4098
1129A1	Toy Train (Simplified) brute force, greedy	1700	x3818
1121C	System Testing implementation	1600	x1995
1119D	Frets On Fire binary search, sortings	1800	x4827
1119C	Ramesses and Corner Inversion constructive algorithms, greedy, implementation, math	1500	x6828
1118F1	Tree Cutting (Easy Version) dfs and similar, trees	1800	x5918
1118E	Yet Another Ball Problem constructive algorithms, implementation	1700	x4144
1118D2	Coffee and Coursework (Hard Version) binary search, greedy	1700	x6275
1118D1	Coffee and Coursework (Easy version) brute force, greedy	1700	x5679
1118C	Palindromic Matrix constructive algorithms, implementation	1700	x5773
1115U3	Block unitary *special problem	1700	x197
1115U2	Chessboard unitary *special problem	1600	x234
1115U1	Anti-diagonal unitary *special problem	1500	x256
1115G3	Palindrome checker oracle *special problem	1600	x231
1115G2	OR oracle *special problem	1600	x312
1114C	Trailing Loves (or L'oeufs?) brute force, implementation, math, number theory	1700	x7376
1114B	Yet Another Array Partitioning Task constructive algorithms, greedy, sortings	1500	x8968
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x6242
1111B	Average Superhero Gang Power brute force, implementation, math	1700	x6244
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x9368
1110B	Tape greedy, sortings	1400	x11545
1109B	Sasha and One More Name constructive algorithms, hashing, strings	1800	x4357
1109A	Sasha and a Bit of Relax dp, implementation	1600	x8491
1108E1	Array and Segments (Easy version) brute force, greedy, implementation	1800	x4532
1108D	Diverse Garland constructive algorithms, dp, greedy	1400	x15069
1107D	Compression dp, implementation, math, number theory	1800	x3723
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x14672
1106B	Lunar New Year and Food Ordering data structures, implementation	1500	x6751
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10343
1103A	Grid game constructive algorithms, implementation	1400	x9765
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5942
1102D	Balanced Ternary String greedy, strings	1500	x7982
1102B	Array K-Coloring greedy, sortings	1400	x10393
1101E	Polycarp's New Job implementation	1500	x7810
1101C	Division and Union sortings	1500	x8004
1098A	Sum in the tree constructive algorithms, dfs and similar, greedy, trees	1600	x8750
1097C	Yuhao and a Parenthesis greedy, implementation	1400	x8444
1096D	Easy Problem dp	1800	x8059
1096C	Polygon for the Angle brute force, geometry	1600	x6809
1095D	Circular Dance implementation	1600	x7551
1095C	Powers Of Two bitmasks, greedy	1400	x16794
1093D	Beautiful Graph dfs and similar, graphs	1700	x9074
1092C	Prefixes and Suffixes strings	1700	x5925
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x6754
1091C	New Year and the Sphere Transmission math, number theory	1400	x10001
1090D	Similar Arrays constructive algorithms	1800	x2057
1089G	Guest Student math	1500	x2892
1089E	Easy Chess constructive algorithms	1700	x1971
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x8057
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5428