Problemset - Codeforces

→ Pay attention

Before contest
Educational Codeforces Round 173 (Rated for Div. 2)
11:29:02
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
748B	Santa Claus and Keyboard Check implementation, strings	1500	x5392
748A	Santa Claus and a Place in a Class implementation, math	800	x9030
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x424
747E	Comments dfs and similar, expression parsing, implementation, strings	1700	x1976
747D	Winter Is Coming dp, greedy, sortings	1800	x3300
747C	Servers implementation	1300	x4684
747B	Mammoth's Genome Decoding implementation, strings	900	x9011
747A	Display Size brute force, math	800	x10325
746G	New Roads constructive algorithms, graphs, trees	2100	x1536
746F	Music in Car data structures, greedy, two pointers	2200	x777
746E	Numbers Exchange greedy, implementation, math	1900	x1745
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x5141
746C	Tram constructive algorithms, implementation, math	1600	x3744
746B	Decoding implementation, strings	900	x28493
746A	Compote implementation, math	800	x21909
745B	Hongcow Solves A Puzzle implementation	1400	x3755
745A	Hongcow Learns the Cyclic Shift implementation, strings	900	x10525
744E	Hongcow Masters the Cyclic Shift strings, two pointers	3200	x143
744D	Hongcow Draws a Circle geometry	3200	x126
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1173
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1788
744A	Hongcow Builds A Nation dfs and similar, graphs	1500	x8518
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1514
743D	Chloe and pleasant prizes dfs and similar, dp, graphs, trees	1800	x4402
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x12453
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x15024
743A	Vladik and flights constructive algorithms, greedy, implementation	1200	x11222
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9343
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x43558
741E	Arpa’s abnormal DNA and Mehrdad’s deep interest data structures, string suffix structures	3400	x180
741D	Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths data structures, dfs and similar, trees	2900	x2843
741C	Arpa’s overnight party and Mehrdad’s silent entering constructive algorithms, dfs and similar, graphs	2600	x2648
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5308
741A	Arpa's loud Owf and Mehrdad's evil plan dfs and similar, math	1600	x5452
740B	Alyona and flowers constructive algorithms	1200	x8356
740A	Alyona and copybooks brute force, implementation	1300	x8924
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2211
739D	Recover a functional graph graph matchings	3400	x192
739C	Alyona and towers data structures	2500	x1529
739B	Alyona and a tree binary search, data structures, dfs and similar, graphs, trees	1900	x4685
739A	Alyona and mex constructive algorithms, greedy	1700	x7901
737F	Dirty plates constructive algorithms, math	3300	x70
737E	Tanya is 5! graph matchings, graphs, greedy, schedules	3300	x123
736E	Chess Championship constructive algorithms, flows, greedy, math	2900	x187
736D	Permutations math, matrices	2800	x465
735E	Ostap and Tree dp, trees	2500	x883
735D	Taxes math, number theory	1600	x13731
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1600	x7565
735B	Urbanization greedy, number theory, sortings	1100	x8427
735A	Ostap and Grasshopper implementation, strings	800	x12569
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1312
734E	Anton and Tree dfs and similar, dp, trees	2100	x4265
734D	Anton and Chess implementation	1700	x3748
734C	Anton and Making Potions binary search, dp, greedy, two pointers	1600	x5364
734B	Anton and Digits brute force, greedy, implementation, math	800	x29601
734A	Anton and Danik implementation, strings	800	x158271
733F	Drivers Dissatisfaction data structures, dsu, graphs, trees	2200	x1138
733E	Sleep in Class constructive algorithms, data structures, math, two pointers	2400	x962
733D	Kostya the Sculptor data structures, hashing	1600	x4189
733C	Epidemic in Monstropolis constructive algorithms, dp, greedy, two pointers	1800	x3360
733B	Parade math	1100	x10696
733A	Grasshopper And the String implementation	1000	x16233
732F	Tourist Reform dfs and similar, graphs	2300	x2654
732E	Sockets greedy, sortings	2100	x1613
732D	Exams binary search, greedy, sortings	1700	x5593
732C	Sanatorium binary search, constructive algorithms, greedy, implementation, math	1200	x9796
732B	Cormen --- The Best Friend Of a Man dp, greedy	1000	x24712
732A	Buy a Shovel brute force, constructive algorithms, implementation, math	800	x74211
731F	Video Cards brute force, data structures, implementation, math, number theory	1900	x2881
731E	Funny Game dp, games	2200	x1739
731D	80-th Level Archeology brute force, data structures, greedy, sortings	2200	x1179
731C	Socks dfs and similar, dsu, graphs, greedy	1600	x7063
731B	Coupons and Discounts constructive algorithms, greedy	1100	x8032
731A	Night at the Museum implementation, strings	800	x46734
730L	Expression Queries data structures	3200	x86
730K	Roads Orientation Problem graphs	3200	x105
730J	Bottles dp	1900	x3520
730I	Olympiad in Programming and Sports dp, flows, graphs, greedy	2000	x2136
730H	Delete Them constructive algorithms, implementation	1300	x3065
730G	Car Repair Shop implementation	1600	x2190
730F	Ber Patio	3100	x91
730E	Award Ceremony greedy, implementation	2200	x724
730D	Running Over The Bridges greedy, implementation, math	2200	x883
730C	Bulmart binary search, dfs and similar	2100	x1257
730B	Minimum and Maximum constructive algorithms, interactive	1800	x2504
730A	Toda 2 greedy, implementation	1800	x1601
729F	Financiers Game dp	2500	x1001
729E	Subordinates constructive algorithms, data structures, graphs, greedy, sortings	1900	x2242
729D	Sea Battle constructive algorithms, greedy, math	1700	x3777
729C	Road to Cinema binary search, greedy, sortings	1700	x3946
729B	Spotlights dp, implementation	1200	x8030
729A	Interview with Oleg implementation, strings	900	x7551
727F	Polycarp's problems binary search, dp, greedy	2300	x800
727E	Games on a CD data structures, hashing, string suffix structures, strings	2300	x1252
727D	T-shirts Distribution constructive algorithms, flows, greedy	1800	x1890
727C	Guess the Array constructive algorithms, interactive, math	1400	x7571
727B	Bill Total Value expression parsing, implementation, strings	1600	x2004
727A	Transformation: from A to B brute force, dfs and similar, math	1000	x14248
725G	Messages on a Tree	3300	x164
725F	Family Photos games, greedy	2900	x541