Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1242D	Number Discovery math	3400	x199
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1684
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x7597
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12667
1240F	Football graphs	3100	x256
1239F	Swiper, no swiping! graphs, implementation	3400	x281
1239E	Turtle dp, implementation	3100	x961
1239D	Catowice City 2-sat, dfs and similar, graph matchings, graphs	2400	x2061
1239C	Queue in the Train data structures, greedy, implementation	2300	x1558
1239B	The World Is Just a Programming Task (Hard Version) implementation	2500	x1052
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7380
1238G	Adilbek and the Watering System data structures, greedy, sortings	2700	x410
1238F	The Maximum Subtree dfs and similar, dp, graphs, trees	2200	x1892
1238E	Keyboard Purchase bitmasks, dp	2200	x3065
1238D	AB-string binary search, combinatorics, dp, strings	1900	x6065
1238C	Standard Free2play dp, greedy, math	1600	x7447
1238B	Kill `Em All greedy, sortings	1300	x13686
1238A	Prime Subtraction math, number theory	900	x24558
1237H	Balanced Reversals constructive algorithms	3300	x373
1237G	Balanced Distribution data structures, dp, greedy	3500	x123
1237F	Balanced Domino Placements combinatorics, dp	2600	x904
1237E	Balanced Binary Search Trees dp, math	2400	x1336
1237D	Balanced Playlist binary search, data structures, implementation	2000	x4248
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4356
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x6114
1237B	Balanced Tunnel data structures, sortings, two pointers	1300	x16307
1237A	Balanced Rating Changes implementation, math	1000	x20059
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x177
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x668
1236D	Alice and the Doll brute force, data structures, greedy, implementation	2300	x1678
1236C	Labs constructive algorithms, greedy, implementation	1300	x10176
1236B	Alice and the List of Presents combinatorics, math	1500	x11141
1236A	Stones brute force, greedy, math	800	x16482
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2617
1234E	Special Permutations math	2000	x2796
1234D	Distinct Characters Queries data structures	1600	x15341
1234C	Pipes dp, implementation	1500	x12672
1234B2	Social Network (hard version) data structures, implementation	1300	x16977
1234B1	Social Network (easy version) implementation	1000	x18822
1234A	Equalize Prices Again math	800	x27908
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x842
1231C	Increasing Matrix greedy	1100	x3873
1230B	Ania and Minimizing greedy, implementation	1000	x18776
1230A	Dawid and Bags of Candies brute force, implementation	800	x21716
1228F	One Node is Gone constructive algorithms, implementation, trees	2500	x439
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2783
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x5230
1228C	Primes and Multiplication math, number theory	1700	x9077
1228B	Filling the Grid implementation, math	1400	x11561
1228A	Distinct Digits brute force, implementation	800	x21855
1227G	Not Same constructive algorithms	2600	x1054
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1533
1227F1	Wrong Answer on test 233 (Easy Version) dp	2200	x1836
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1498
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4411
1227D1	Optimal Subsequences (Easy Version) data structures, greedy	1600	x6451
1227C	Messy constructive algorithms	1700	x5534
1227B	Box constructive algorithms	1200	x9699
1227A	Math Problem math	1100	x9839
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x562
1225F	Tree Factory constructive algorithms, greedy, trees	2500	x887
1225E	Rock Is Push binary search, dp	2200	x1903
1225D	Power Products hashing, math, number theory	1800	x8145
1225C	p-binary bitmasks, brute force, math	1600	x9035
1225B2	TV Subscriptions (Hard Version) implementation, two pointers	1300	x10757
1225B1	TV Subscriptions (Easy Version) implementation	1000	x11939
1225A	Forgetting Things math	900	x15860
1223G	Wooden Raft binary search, math, number theory	3200	x250
1223F	Stack Exterminable Arrays data structures, divide and conquer, dp, hashing	2600	x2073
1223E	Paint the Tree dp, sortings, trees	2100	x2625
1223D	Sequence Sorting dp, greedy, two pointers	2000	x4075
1223C	Save the Nature binary search, greedy	1600	x8385
1223B	Strings Equalization strings	1000	x14984
1223A	CME math	800	x21658
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x766
1221F	Choose a Square binary search, data structures, sortings	2400	x1061
1221E	Game With String games	2500	x1095
1221D	Make The Fence Great Again dp	1800	x9191
1221C	Perfect Team binary search, math	1200	x21307
1221B	Knights constructive algorithms, greedy	1100	x11986
1221A	2048 Game brute force, greedy, math	1000	x17003
1220G	Geolocation geometry	3400	x54
1220F	Gardener Alex binary search, data structures	2700	x719
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x2791
1220D	Alex and Julian bitmasks, math, number theory	1900	x3920
1220C	Substring Game in the Lesson games, greedy, strings	1300	x10294
1220B	Multiplication Table math, number theory	1300	x11655
1220A	Cards implementation, sortings, strings	800	x29989
1219G	Harvester implementation	2000	x670
1219C	Periodic integer number implementation, strings	1700	x1801
1218I	The Light Square 2-sat, dfs and similar, greedy	2100	x609
1218H	Function Composition dfs and similar	2900	x134
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x100
1218F	Workout plan data structures, greedy	1500	x2970
1218E	Product Tuples divide and conquer, fft	2500	x382
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x504
1218C	Jumping Transformers dp	2600	x183
1218B	Guarding warehouses data structures, geometry	3000	x73
1218A	BubbleReactor dp, graphs	2800	x159
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x596