Problemset - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 167 (Rated for Div. 2)
28:22:54
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
981G	Magic multisets data structures	2500	x628
981F	Round Marriage binary search, graph matchings, greedy	2500	x679
976F	Minimal k-covering flows, graphs	2500	x563
976D	Degree Set constructive algorithms, graphs, implementation	2500	x674
963D	Frequency of String hashing, string suffix structures, strings	2500	x1844
958C3	Encryption (hard) data structures, dp	2500	x497
954H	Path Counting combinatorics, dp	2500	x567
946G	Almost Increasing Array data structures, dp	2500	x656
930D	Game with Tokens data structures, games, implementation	2500	x399
924D	Contact ATC	2500	x823
923D	Picking Strings constructive algorithms, implementation, strings	2500	x1165
912C	Perun, Ult! brute force, greedy, sortings	2500	x511
911G	Mass Change Queries data structures	2500	x2675
909F	AND-permutations constructive algorithms	2500	x521
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x739
888F	Connecting Vertices dp, graphs	2500	x763
887F	Row of Models greedy, sortings	2500	x162
884F	Anti-Palindromize flows, graphs, greedy	2500	x966
884E	Binary Matrix dsu	2500	x673
883L	Berland.Taxi data structures	2500	x230
883D	Packmen Strike Back binary search, dp, math	2500	x351
875F	Royal Questions dsu, graphs, greedy	2500	x1265
868F	Yet Another Minimization Problem divide and conquer, dp	2500	x3528
855D	Rowena Ravenclaw's Diadem trees	2500	x476
852A	Digits brute force, implementation, math	2500	x383
845F	Guards In The Storehouse bitmasks, dp	2500	x427
840D	Destiny data structures, probabilities	2500	x2832
840C	On the Bench combinatorics, dp	2500	x1667
837G	Functions On The Segments data structures	2500	x655
835F	Roads in the Kingdom dfs and similar, dp, graphs, trees	2500	x1018
832C	Strange Radiation binary search, implementation, math	2500	x428
825G	Tree Queries dfs and similar, graphs, trees	2500	x1158
822F	Madness constructive algorithms, dfs and similar, trees	2500	x289
813F	Bipartite Checking data structures, dsu, graphs	2500	x1243
804D	Expected diameter of a tree binary search, brute force, dfs and similar, dp, sortings, trees	2500	x1262
799E	Aquarium decoration data structures, greedy, two pointers	2500	x920
792E	Colored Balls greedy, math, number theory	2500	x1052
778C	Peterson Polyglot brute force, dfs and similar, dsu, hashing, strings, trees	2500	x867
771D	Bear and Company dp	2500	x1110
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1275
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x286
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x415
739C	Alyona and towers data structures	2500	x1446
735E	Ostap and Tree dp, trees	2500	x853
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1283
729F	Financiers Game dp	2500	x938
712E	Memory and Casinos data structures, math, probabilities	2500	x606
710D	Two Arithmetic Progressions math, number theory	2500	x1181
706E	Working routine data structures, implementation	2500	x1121
704B	Ant Man dp, graphs, greedy	2500	x1572
696D	Legen... data structures, dp, matrices, strings	2500	x1243
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x857
683I	Loader *special problem, graphs	2500	x38
681E	Runaway to a Shadow geometry, sortings	2500	x457
678F	Lena and Queries data structures, divide and conquer, geometry	2500	x855
666C	Codeword combinatorics, strings	2500	x771
660F	Bear and Bowling 4 binary search, data structures, divide and conquer, geometry, ternary search	2500	x1542
645F	Cowslip Collections combinatorics, math, number theory	2500	x766
628F	Bear and Fair Set flows, graphs	2500	x745
618E	Robot Arm data structures, geometry	2500	x587
613C	Necklace constructive algorithms, math	2500	x976
611F	New Year and Cleaning binary search, implementation	2500	x456
610E	Alphabet Permutations data structures, strings	2500	x857
609F	Frogs and mosquitoes data structures, greedy	2500	x1206
607C	Marbles hashing, strings	2500	x781
605D	Board Game data structures, dfs and similar	2500	x792
596E	Wilbur and Strings dfs and similar, dp, graphs, strings	2500	x390
594D	REQ data structures, number theory	2500	x1529
594B	Max and Bike binary search, geometry	2500	x476
580E	Kefa and Watch data structures, hashing, strings	2500	x1982
571C	CNF 2 constructive algorithms, dfs and similar, graphs, greedy	2500	x612
566G	Max and Min geometry	2500	x334
555D	Case of a Top Secret binary search, implementation, math	2500	x858
551E	GukiZ and GukiZiana binary search, data structures, implementation	2500	x1673
543C	Remembering Strings bitmasks, dp	2500	x1368
530I	Different variables *special problem	2500	x44
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2094
508D	Tanya and Password dfs and similar, graphs	2500	x3274
501E	Misha and Palindrome Degree binary search, combinatorics, implementation	2500	x720
484E	Sign on Fence binary search, constructive algorithms, data structures	2500	x2196
468C	Hack it! binary search, constructive algorithms, math	2500	x2280
449C	Jzzhu and Apples constructive algorithms, number theory	2500	x2215
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x757
442C	Artem and Array data structures, greedy	2500	x1639
437E	The Child and Polygon dp, geometry	2500	x693
435E	Special Graph	2500	x236
433E	Tachibana Kanade's Tofu dp	2500	x474
425E	Sereja and Sets dp	2500	x552
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x129
416E	President's Path dp, graphs, shortest paths	2500	x1397
407C	Curious Array brute force, combinatorics, implementation, math	2500	x960
401E	Olympic Games math	2500	x168
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x659
380D	Sereja and Cinema combinatorics, math	2500	x413
379E	New Year Tree Decorations geometry, schedules, sortings	2500	x338
370E	Summer Reading dp, greedy	2500	x233
363E	Two Circles brute force, data structures, implementation	2500	x193
360C	Levko and Strings combinatorics, dp	2500	x1071
351C	Jeff and Brackets dp, matrices	2500	x541
348D	Turtles dp, matrices	2500	x1632