Problemset - Codeforces

Rating changes for last rounds are temporarily rolled back. They will be returned soon. ×

→ Pay attention

Before contest
Codeforces Round 952 (Div. 4)
25:56:46
Register now »

→ Filter Problems

Difficulty: —

implementation

Add tag

Problems

#	Name
1649B	Game of Ball Passing greedy, implementation	1300	x12817
1649A	Game implementation	800	x15421
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x387
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x812
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2882
1647B	Madoka and the Elegant Gift brute force, constructive algorithms, graphs, implementation	1200	x15139
1647A	Madoka and Math Dad implementation, math	800	x22545
1646F	Playing Around the Table constructive algorithms, greedy, implementation	2900	x407
1646D	Weight the Tree constructive algorithms, dfs and similar, dp, implementation, trees	2000	x3578
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3017
1644D	Cross Coloring data structures, implementation, math	1700	x7022
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13443
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20509
1644A	Doors and Keys implementation	800	x26975
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3747
1638E	Colorful Operations brute force, data structures, implementation	2400	x1808
1638D	Big Brush constructive algorithms, data structures, greedy, implementation	2000	x4075
1637E	Best Pair binary search, brute force, implementation	2100	x3205
1637C	Andrew and Stones greedy, implementation	1200	x17440
1634F	Fibonacci Additions brute force, data structures, hashing, implementation, math	2700	x1535
1632A	ABC implementation	800	x29015
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x3098
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15293
1627F	Not Splitting geometry, graphs, greedy, implementation, shortest paths	2700	x556
1627E	Not Escaping data structures, dp, implementation, shortest paths, two pointers	2200	x2255
1627A	Not Shading constructive algorithms, implementation	800	x23857
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10678
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1983
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x3984
1624B	Make AP implementation, math	900	x34793
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1355
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x13936
1623A	Robot Cleaner brute force, implementation, math	800	x19921
1621F	Strange Instructions data structures, greedy, implementation	2700	x539
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1731
1621B	Integers Shop data structures, greedy, implementation	1500	x13173
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x7880
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6402
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21311
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8764
1619C	Wrong Addition implementation	1200	x20420
1619B	Squares and Cubes implementation, math	800	x30243
1619A	Square String? implementation, strings	800	x49070
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4073
1618B	Missing Bigram implementation	800	x22373
1617E	Christmas Chocolates dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees	2700	x841
1617D2	Too Many Impostors (hard version) constructive algorithms, implementation, interactive, math	2400	x1721
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4567
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12034
1616A	Integer Diversity implementation	800	x22501
1613B	Absent Remainder greedy, implementation, sortings	1000	x21262
1613A	Long Comparison implementation, math	900	x24079
1610E	AmShZ and G.O.A.T. binary search, brute force, greedy, implementation, math	2300	x1637
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7045
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9541
1609B	William the Vigilant implementation, strings	1100	x11546
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16752
1608F	MEX counting combinatorics, dp, implementation	3200	x524
1608E	The Cells on the Paper binary search, implementation, sortings	2800	x425
1607F	Robot on the Board 2 brute force, dfs and similar, graphs, implementation	2300	x1897
1607E	Robot on the Board 1 implementation	1600	x9080
1607A	Linear Keyboard implementation, strings	800	x36307
1606D	Red-Blue Matrix brute force, constructive algorithms, implementation, sortings	2400	x1406
1606B	Update Files greedy, implementation, math	1100	x18344
1605E	Array Equalizer binary search, greedy, implementation, math, number theory, sortings, two pointers	2400	x1001
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x2849
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16489
1603F	October 18, 2017 combinatorics, dp, implementation, math	2700	x269
1602B	Divine Array constructive algorithms, implementation	1100	x13887
1602A	Two Subsequences implementation	800	x18805
1598E	Staircases brute force, combinatorics, data structures, dfs and similar, dp, implementation, math	2100	x2253
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8453
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x20199
1598B	Groups brute force, implementation	1000	x15819
1598A	Computer Game brute force, dfs and similar, dp, implementation	800	x22897
1594E2	Rubik's Cube Coloring (hard version) brute force, dp, implementation, math, trees	2300	x1453
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2369
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x11834
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2171
1585A	Life of a Flower implementation	800	x17571
1580C	Train Maintenance brute force, data structures, implementation	2200	x1692
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3581
1579C	Ticks greedy, implementation	1500	x10343
1579B	Shifting Sort implementation, sortings	1100	x17875
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x347
1578H	Higher Order Functions implementation, strings	1700	x1998
1578E	Easy Scheduling implementation, math	1200	x3742
1575K	Knitting Batik implementation, math	2200	x662
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3664
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x879
1574D	The Strongest Build binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation	2000	x4380
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8604
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x324
1571C	Rhyme *special problem, implementation	1800	x369
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x787
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4315
1569A	Balanced Substring implementation	800	x25331
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x732
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4427
1567A	Domino Disaster implementation, strings	800	x29749