Problemset - Codeforces

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combinatorics

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Problems

#	Name
617B	Chocolate combinatorics	1300	x17378
1433E	Two Round Dances combinatorics, math	1300	x18058
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x28191
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29150
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x35382
459B	Pashmak and Flowers combinatorics, implementation, sortings	1300	x38599
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17098
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19131
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22947
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1200	x25228
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17059
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17560
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19570
630C	Lucky Numbers combinatorics, math	1100	x20474
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21580
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21699
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14457
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19627
1293B	JOE is on TV! combinatorics, greedy, math	1000	x20840
610A	Pasha and Stick combinatorics, math	1000	x22104
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x22962
1840C	Ski Resort combinatorics, math, two pointers	1000	x24812
1166A	Silent Classroom combinatorics, greedy	900	x13989
1777B	Emordnilap combinatorics, greedy, math	900	x16622
1582B	Luntik and Subsequences combinatorics, math	900	x18973
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22101
1543B	Customising the Track combinatorics, greedy, math	900	x22691
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x24010
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13143
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13270
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15830
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18385
1821A	Matching combinatorics, math	800	x19392
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21026
1674B	Dictionary combinatorics, math	800	x25675
1743A	Password brute force, combinatorics, implementation, math	800	x26181
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31223

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