Problemset - Codeforces

→ Pay attention

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

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1234A	Equalize Prices Again math	800	x27911
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x842
1231C	Increasing Matrix greedy	1100	x3875
1230B	Ania and Minimizing greedy, implementation	1000	x18777
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	x2784
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	x11562
1228A	Distinct Digits brute force, implementation	800	x21857
1227G	Not Same constructive algorithms	2600	x1056
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1534
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	x6452
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	x1905
1225D	Power Products hashing, math, number theory	1800	x8157
1225C	p-binary bitmasks, brute force, math	1600	x9037
1225B2	TV Subscriptions (Hard Version) implementation, two pointers	1300	x10758
1225B1	TV Subscriptions (Easy Version) implementation	1000	x11940
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	x2081
1223E	Paint the Tree dp, sortings, trees	2100	x2629
1223D	Sequence Sorting dp, greedy, two pointers	2000	x4076
1223C	Save the Nature binary search, greedy	1600	x8388
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	x1096
1221D	Make The Fence Great Again dp	1800	x9193
1221C	Perfect Team binary search, math	1200	x21312
1221B	Knights constructive algorithms, greedy	1100	x11987
1221A	2048 Game brute force, greedy, math	1000	x17004
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	x2792
1220D	Alex and Julian bitmasks, math, number theory	1900	x3921
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	x29994
1219G	Harvester implementation	2000	x670
1219C	Periodic integer number implementation, strings	1700	x1802
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	x506
1218C	Jumping Transformers dp	2600	x184
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
1217E	Sum Queries? data structures, greedy, implementation, math	2300	x1897
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x5398
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7479
1217B	Zmei Gorynich greedy, math	1600	x11297
1217A	Creating a Character binary search, math	1300	x15053
1216F	Wi-Fi data structures, dp, greedy	2100	x2706
1216E2	Numerical Sequence (hard version) binary search, math	2200	x1491
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3464
1216D	Swords math	1300	x11178
1216C	White Sheet geometry, math	1700	x9323
1216B	Shooting greedy, implementation, sortings	900	x18516
1216A	Prefixes strings	800	x18740
1215F	Radio Stations 2-sat	2700	x993
1215E	Marbles bitmasks, dp	2200	x3061
1215D	Ticket Game games, greedy, math	1700	x6205
1215C	Swap Letters constructive algorithms, greedy	1500	x11285
1215B	The Number of Products combinatorics, dp, implementation	1400	x13176
1215A	Yellow Cards greedy, implementation, math	1000	x11595
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x403
1214G	Feeling Good bitmasks, data structures	3200	x311
1214F	Employment greedy, sortings	2700	x460
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2709
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x5216
1214C	Bad Sequence data structures, greedy	1200	x13333
1214B	Badges brute force, math	1100	x10880
1214A	Optimal Currency Exchange brute force, math	1400	x9123
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7399
1213F	Unstable String Sort data structures, dfs and similar, dsu, graphs, greedy, implementation, strings	2100	x2613
1213E	Two Small Strings brute force, constructive algorithms	1900	x5203
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11485
1213D1	Equalizing by Division (easy version) brute force, implementation	1500	x11430
1213C	Book Reading math	1200	x18544
1213B	Bad Prices data structures, implementation	1100	x26910
1213A	Chips Moving math	900	x24161
1211I	Unusual Graph *special problem, graphs	3000	x40
1211H	Road Repair in Treeland *special problem, binary search, dp, trees	3100	x45
1211G	King's Path *special problem, math, trees	2500	x71
1211F	kotlinkotlinkotlinkotlin... *special problem, graphs, implementation, strings	2300	x124
1211E	Double Permutation Inc. *special problem, binary search, greedy	2000	x194