Codeforces problemset search & solutions
Exclude tags.

Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.

Get exact match for tags using this format, eg: [u'brute force', 'dp']

< 1 2 3 ... 89 90 91 92 93 ... 100 101 102 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
1299 Interactive Game with Coloring brute force constructive algorithms graphs implementation interactive math trees Statement E Educational Codeforces Round 155 (Rated for Div. 2) {1879} PROGRAMMING 120773 2400
529 Last Man Standing data structures number theory Statement F Educational Codeforces Round 155 (Rated for Div. 2) {1879} PROGRAMMING 120773 2800
23469 Rigged! greedy Statement A Educational Codeforces Round 155 (Rated for Div. 2) {1879} PROGRAMMING 120773 800
23029 Chips on the Board constructive algorithms greedy Statement B Educational Codeforces Round 155 (Rated for Div. 2) {1879} PROGRAMMING 120773 900
26089 Three Threadlets math Statement B Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
17527 Perfect Square brute force implementation Statement C Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
7319 Minimum Maximum Distance dfs and similar dp graphs shortest paths trees Statement F Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
34627 Don't Try to Count brute force strings Statement A Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
18675 Divide and Equalize math number theory Statement D Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
15605 Block Sequence dp Statement E Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
2470 Anya and the Mysterious String binary search data structures implementation Statement G Codeforces Round 903 (Div. 3) {1881} PROGRAMMING 121327
304 Two Permutations (Hard Version) constructive algorithms Statement E2 Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 2000.0 Codeforces Round 899 (Div. 2) Editorial
1053 Two Permutations (Easy Version) brute force constructive algorithms greedy number theory Statement E1 Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 2000.0 Codeforces Round 899 (Div. 2) Editorial
5717 Tree XOR bitmasks dfs and similar dp greedy trees Statement D Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 2000.0 Codeforces Round 899 (Div. 2) Editorial
15869 Sets and Union bitmasks brute force constructive algorithms greedy Statement B Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 1000.0 Codeforces Round 899 (Div. 2) Editorial
25685 Increasing Sequence greedy Statement A Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 500.0 Codeforces Round 899 (Div. 2) Editorial
12842 Card Game dp greedy Statement C Codeforces Round 899 (Div. 2) {1882} PROGRAMMING 1500.0 Codeforces Round 899 (Div. 2) Editorial
10024 You Are So Beautiful data structures Statement F Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 2750.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
30143 Raspberries math Statement C Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 1500.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
26300 Morning math Statement A Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 500.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
8487 Look Back bitmasks greedy Statement E Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 2500.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
12270 In Love data structures Statement D Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 1750.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
5616 Dances (Hard Version) binary search Statement G2 Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 2000.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
12033 Dances (Easy version) binary search Statement G1 Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 1750.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
35435 Chemistry strings Statement B Codeforces Round 905 (Div. 3) {1883} PROGRAMMING 1000.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
17756 Simple Design brute force constructive algorithms greedy math Statement A Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 500.0 Codeforces Round #904 (Div. 2) Editorial
6344 Medium Design data structures dp sortings Statement C Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 1750.0 Codeforces Round #904 (Div. 2) Editorial
13007 Haunted House greedy math two pointers Statement B Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 1000.0 Codeforces Round #904 (Div. 2) Editorial
327 Hard Design implementation Statement E Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 3000.0 Codeforces Round #904 (Div. 2) Editorial
3374 Counting Rhyme brute force combinatorics dp math number theory sortings Statement D Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 2500.0 Codeforces Round #904 (Div. 2) Editorial
0 Deterministic Scheduling for Extended Reality over 5G and Beyond *special Statement A ICPC 2023 Online Challenge powered by Huawei {1885} PROGRAMMING
26223 Sum of Three brute force constructive algorithms math Statement A Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
3688 Monocarp and the Set brute force combinatorics math Statement D Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
1551 I Wanna be the Team Leader bitmasks dp two pointers Statement E Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
16582 Fear of the Dark binary search geometry math Statement B Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
195 Diamond Theft data structures greedy Statement F Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
12205 Decreasing String constructive algorithms strings Statement C Educational Codeforces Round 156 (Rated for Div. 2) {1886} PROGRAMMING Educational Codeforces Round 156 Editorial
3153 Time Travel binary search graphs implementation shortest paths Statement B Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 750.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
1006 Split binary search data structures divide and conquer math two pointers Statement D Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 1250.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
184 Minimum Segments constructive algorithms Statement F Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 2750.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
1834 Minimum Array constructive algorithms data structures two pointers Statement C Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 1000.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
391 Good Colorings binary search constructive algorithms graphs interactive Statement E Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 2000.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
13677 Qingshan Loves Strings 2 constructive algorithms greedy Statement A Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 750.0 Codeforces Round 906 Editorial
645 Game of Stacks dfs and similar graphs implementation trees Statement D Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 2000.0 Codeforces Round 906 Editorial
117 Doremy's Swapping Trees dfs and similar graphs trees Statement E Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 3500.0 Codeforces Round 906 Editorial
1048 Doremy's Drying Plan (Hard Version) data structures dp Statement C2 Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 1500.0 Codeforces Round 906 Editorial
3411 Doremy's Drying Plan (Easy Version) brute force data structures dp greedy sortings Statement C1 Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 750.0 Codeforces Round 906 Editorial
7623 Doremy's Connecting Plan greedy sortings Statement B Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 1250.0 Codeforces Round 906 Editorial
86 Doremy's Average Tree dp trees Statement F Codeforces Round 906 (Div. 1) {1889} PROGRAMMING 3500.0 Codeforces Round 906 Editorial
17802 Qingshan Loves Strings implementation Statement B Codeforces Round 906 (Div. 2) {1890} PROGRAMMING 750.0 Codeforces Round 906 Editorial
29642 Doremy's Paint 3 constructive algorithms Statement A Codeforces Round 906 (Div. 2) {1890} PROGRAMMING 500.0 Codeforces Round 906 Editorial
4070 Suspicious logarithms binary search brute force implementation math number theory Statement D Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 1500.0
19486 Sorting with Twos constructive algorithms sortings Statement A Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 500.0
14274 Smilo and Monsters constructive algorithms greedy sortings two pointers Statement C Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 1000.0
19341 Deja Vu math sortings Statement B Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 750.0
867 Brukhovich and Exams brute force greedy math sortings Statement E Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 2000.0
3959 A Growing Tree data structures dfs and similar trees Statement F Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 2250.0
9191 Neutral Tonality constructive algorithms greedy sortings two pointers Statement B Codeforces Round 908 (Div. 1) {1893} PROGRAMMING 1000.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
2806 Freedom of Choice brute force greedy implementation Statement C Codeforces Round 908 (Div. 1) {1893} PROGRAMMING 1250.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
945 Colorful Constructive constructive algorithms greedy math Statement D Codeforces Round 908 (Div. 1) {1893} PROGRAMMING 2250.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
203 Cacti Symphony combinatorics dfs and similar dp graphs Statement E Codeforces Round 908 (Div. 1) {1893} PROGRAMMING 2750.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
12797 Anonymous Informant brute force implementation Statement A Codeforces Round 908 (Div. 1) {1893} PROGRAMMING 500.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
16452 Two Out of Three constructive algorithms Statement B Codeforces Round 908 (Div. 2) {1894} PROGRAMMING 750.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
19246 Secret Sport implementation Statement A Codeforces Round 908 (Div. 2) {1894} PROGRAMMING 500.0 Codeforces Round 908 (Div. 1, Div, 2) Editorial
6245 XOR Construction bitmasks constructive algorithms data structures math trees Statement D Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
204 Two Characters, Two Colors binary search data structures dp flows geometry Statement G Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
24694 Treasure Chest math Statement A Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
11614 Torn Lucky Ticket brute force dp hashing implementation math Statement C Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
20663 Points and Minimum Distance greedy math sortings Statement B Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
1612 Infinite Card Game brute force dfs and similar games graphs greedy sortings Statement E Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
795 Fancy Arrays combinatorics math matrices Statement F Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
2307 Permutation Sorting data structures divide and conquer sortings Statement E CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 2250.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
353 Pepe Racing constructive algorithms interactive sortings Statement G CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 3250.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
6015 Ones and Twos data structures math two pointers Statement D CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 2000.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
10071 Matching Arrays binary search constructive algorithms greedy sortings Statement C CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 1500.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
27375 Jagged Swaps sortings Statement A CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 500.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
109 Cyclic Hamming (Hard Version) dp fft math number theory Statement H2 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 1000.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
96 Cyclic Hamming (Easy Version) divide and conquer dp fft math number theory Statement H1 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 4000.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
770 Bracket Xoring constructive algorithms implementation Statement F CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 2750.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
15443 AB Flipping greedy strings Statement B CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 1000.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
831 Vova Escapes the Matrix dfs and similar shortest paths Statement F Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 2500.0 Editorial for Codeforces Round #910 (Div. 2)
2370 Sofia and Strings data structures greedy strings Statement E Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 2000.0 Editorial for Codeforces Round #910 (Div. 2)
16286 Milica and String brute force implementation strings Statement A Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 500.0 Editorial for Codeforces Round #910 (Div. 2)
12465 Milena and Admirer greedy math Statement B Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 1250.0 Editorial for Codeforces Round #910 (Div. 2)
5753 Colorful Grid constructive algorithms implementation Statement C Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 1750.0 Editorial for Codeforces Round #910 (Div. 2)
5466 Absolute Beauty greedy math Statement D Codeforces Round 910 (Div. 2) {1898} PROGRAMMING 1750.0 Editorial for Codeforces Round #910 (Div. 2)
13961 Yarik and Musical Notes math number theory Statement D Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
22742 Yarik and Array greedy two pointers Statement C Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
3365 Unusual Entertainment data structures dfs and similar ds shortest paths sortings trees Statement G Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
16097 Queue Sort greedy implementation sortings Statement E Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
50939 Game with Integers games math number theory Statement A Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
8062 Alex's whims constructive algorithms graphs shortest paths trees Statement F Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
22064 250 Thousand Tons of TNT brute force implementation number theory Statement B Codeforces Round 909 (Div. 3) {1899} PROGRAMMING Разбор Codeforces Round 909 (Div. 3)
2177 Transitive Graph constructive algorithms dfs and similar dp graphs implementation Statement E Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 2250.0 Codeforces Round 911 (Div. 2) Editorial
4426 Small GCD brute force math number theory Statement D Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 2000.0 Codeforces Round 911 (Div. 2) Editorial
300 Local Deletions data structures implementation Statement F Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 3000.0 Codeforces Round 911 (Div. 2) Editorial
18146 Laura and Operations dp math Statement B Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 1000.0 Codeforces Round 911 (Div. 2) Editorial
31478 Cover in Water constructive algorithms implementation Statement A Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 500.0 Codeforces Round 911 (Div. 2) Editorial
11999 Anji's Binary Tree dfs and similar dp shortest paths trees Statement C Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 1250.0 Codeforces Round 911 (Div. 2) Editorial
7305 Yet Another Monster Fight binary search greedy implementation math Statement D Educational Codeforces Round 158 (Rated for Div. 2) {1901} PROGRAMMING Educational Codeforces Round 158 Editorial