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14058 Students and Shoelaces brute force dfs and similar graphs implementation Statement B Codeforces Beta Round 94 (Div. 2 Only) {129} PROGRAMMING Problem D of Beta Round 94 1200
3064 Party brute force dfs and similar dsu graphs Statement C2 ABBYY Cup 2.0 - Easy {177} PROGRAMMING 1500
24922 Ice Skating brute force dfs and similar dsu graphs Statement A Codeforces Round 134 (Div. 1) {217} PROGRAMMING Editorial for Codeforces Round #134 1400
10367 Colorful Graph brute force dfs and similar graphs Statement D Codeforces Round 151 (Div. 2) {246} PROGRAMMING Codeforces Round #151 (Div. 2) Tutorial 1700
668 Rats brute force dfs and similar graphs implementation shortest paths Statement D Codeforces Round 155 (Div. 2) {254} PROGRAMMING Codeforces Round #155 (Div. 2) — tutorial 2600
7294 Coach brute force dfs and similar graphs Statement B Codeforces Round 181 (Div. 2) {300} PROGRAMMING English Tutorial 1500
942 Pumping Stations brute force dfs and similar divide and conquer flows graphs greedy trees Statement E Codeforces Round 200 (Div. 1) {343} PROGRAMMING Codeforces Round #200 Tutorial 2800
880 Wrong Floyd brute force constructive algorithms dfs and similar graphs Statement E Codeforces Round 203 (Div. 2) {350} PROGRAMMING Editorial Codeforces Round #203 (Div. 2) 2200
9333 Strongly Connected City brute force dfs and similar graphs implementation Statement B Bayan 2015 Contest Warm Up {475} PROGRAMMING Bayan 2015 Contest Warm Up Editorial 1400
7109 Unbearable Controversy of Being brute force combinatorics dfs and similar graphs Statement D Codeforces Round 277.5 (Div. 2) {489} PROGRAMMING Codeforces Round #277.5 (Div. 2) Editorial [A-D for now] 1700
2585 Mr. Kitayuta's Colorful Graph brute force dfs and similar dsu graphs Statement D Codeforces Round 286 (Div. 1) {506} PROGRAMMING Editorial 2300
8391 Bear and Three Musketeers brute force dfs and similar graphs hashing Statement B Codeforces Round 318 [RussianCodeCup Thanks-Round] (Div. 2) {574} PROGRAMMING Codeforces Round #318 [RussianCodeCup Thanks-Round] Editorial 1500
797 Three-dimensional Turtle Super Computer brute force dfs and similar graphs Statement D VK Cup 2016 - Qualification Round 2 {638} PROGRAMMING 2200
365 Bear and Chase brute force dfs and similar graphs implementation math probabilities Statement D Codeforces Round 356 (Div. 1) {679} PROGRAMMING Codeforces Round #356 — Editorial 2900
771 Dating brute force dfs and similar graphs trees Statement I Bubble Cup X - Finals [Online Mirror] {852} PROGRAMMING Tutorial 2500
305 The Overdosing Ubiquity brute force dfs and similar graphs Statement D Codeforces Round 439 (Div. 2) {869} PROGRAMMING Tutorial 2800
15545 Protect Sheep brute force dfs and similar graphs implementation Statement A Codeforces Round 470 (rated, Div. 2, based on VK Cup 2018 Round 1) {948} PROGRAMMING VK Cup 2018 Round 1 and CF Round #470 (div. 1 & 2) editorial 1000
2152 Berland and the Shortest Paths brute force dfs and similar graphs shortest paths Statement F Codeforces Round 496 (Div. 3) {1005} PROGRAMMING Codeforces Round 496 (Div. 3): Problem Tutorials 2400
25780 Badge brute force dfs and similar graphs Statement B Codeforces Round 503 (by SIS, Div. 2) {1020} PROGRAMMING Codeforces Round #503 (based on SIS olympiad) — Editorial 1000
1140 Maximum Matching bitmasks brute force dfs and similar dp graphs Statement E Codeforces Round 508 (Div. 2) {1038} PROGRAMMING Tutorial 2400
1181 Graph Traveler brute force data structures dfs and similar dp graphs implementation math number theory Statement F Codeforces Round 578 (Div. 2) {1200} PROGRAMMING Codeforces Round #578 (Div. 2) Editorial 2500
2382 Ehab's REAL Number Theory Problem brute force dfs and similar graphs number theory shortest paths Statement E Codeforces Round 628 (Div. 2) {1325} PROGRAMMING 2500.0 74235 2700
3577 Infinite Path brute force dfs and similar graphs math number theory Statement D Educational Codeforces Round 84 (Rated for Div. 2) {1327} PROGRAMMING Educational Codeforces Round 84 Editorial 2200
15541 Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math Statement C Educational Codeforces Round 104 (Rated for Div. 2) {1487} PROGRAMMING 87873
12544 Min Cost String brute force constructive algorithms dfs and similar graphs greedy Statement D Educational Codeforces Round 107 (Rated for Div. 2) {1511} PROGRAMMING 89634
3830 Permutation Shift brute force combinatorics constructive algorithms dfs and similar graphs math Statement E Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2) {1553} PROGRAMMING 1750.0 Harbour.Space Scholarship Contest 2021-2022 (Div. 1 + Div. 2) Editorial
3182 Mocha and Diana (Hard Version) brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers Statement D2 Codeforces Round 738 (Div. 2) {1559} PROGRAMMING 1500.0 Tutorial (en) 2500
2011 AND-MEX Walk bitmasks brute force data structures dfs and similar dsu graphs greedy Statement E Codeforces Round 782 (Div. 2) {1659} PROGRAMMING 2250.0 Codeforces Round #782 (Div. 2) Editorial
21037 Getting Zero brute force dfs and similar graphs greedy shortest paths Statement B Educational Codeforces Round 126 (Rated for Div. 2) {1661} PROGRAMMING Educational Codeforces Round 126 Editorial
1404 ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs Statement E Codeforces Round 798 (Div. 2) {1689} PROGRAMMING 2500.0 Editorial for Codeforces Round #798 (Div. 2)
1164 Tree Recovery bitmasks brute force constructive algorithms dfs and similar dsu graphs trees Statement F Codeforces Global Round 21 {1696} PROGRAMMING 2500.0 Editorial of Codeforces Global Round 21
1476 Coloring brute force combinatorics constructive algorithms dfs and similar dp dsu graphs implementation Statement E Educational Codeforces Round 130 (Rated for Div. 2) {1697} PROGRAMMING 103835
4229 Edge Split brute force constructive algorithms dfs and similar graphs probabilities trees Statement D Codeforces Round 819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 {1726} PROGRAMMING 2000.0 Codeforces Round #819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 Editorial
10638 SlavicG's Favorite Problem bitmasks brute force constructive algorithms data structures dfs and similar graphs greedy Statement G Codeforces Round 835 (Div. 4) {1760} PROGRAMMING 109348
4116 Timofey and Black-White Tree brute force dfs and similar divide and conquer graphs greedy math shortest paths trees Statement F Codeforces Round 847 (Div. 3) {1790} PROGRAMMING 111948
3977 Monsters brute force data structures dfs and similar dsu graphs implementation trees Statement E CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!) {1810} PROGRAMMING 2000.0 Editorial of CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!)
5207 Fish Graph brute force constructive algorithms dfs and similar graphs trees Statement B Codeforces Round 869 (Div. 1) {1817} PROGRAMMING 1000.0 Codeforces Round #869 (Div.1, Div.2) Editorial
7820 Gardening Friends brute force dfs and similar dp graphs trees Statement F Codeforces Round 867 (Div. 3) {1822} PROGRAMMING Codeforces Round #867 (Div. 3) Editorial
3238 Speedrun brute force data structures dfs and similar dp graphs sortings Statement E Pinely Round 2 (Div. 1 + Div. 2) {1863} PROGRAMMING 1750.0
1902 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
2460 Light Bulbs (Easy Version) brute force combinatorics dfs and similar dp dsu graphs math Statement G1 Codeforces Round 916 (Div. 3) {1914} PROGRAMMING Codeforces Round 916 (Div. 3) Editorial
17627 Permutation Game brute force dfs and similar games graphs greedy math Statement D Codeforces Round 943 (Div. 3) {1968} PROGRAMMING 129096 1300
904 Min-Fund Prison (Medium) brute force dfs and similar dp graphs trees Statement G2 Helvetic Coding Contest 2024 online mirror (teams allowed, unrated) {1970} PROGRAMMING Helvetic Coding Contest 2024 Editorial 2200
7396 Maximize the Largest Component (Easy Version) brute force data structures dfs and similar dsu graphs implementation Statement H1 Codeforces Round 952 (Div. 4) {1985} PROGRAMMING Codeforces Round 952 (Div. 4) Editorial
3015 Cases bitmasks brute force combinatorics dfs and similar dp graphs greedy strings Statement D Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 2250.0 Video Tutorial
7559 Connect the Dots brute force dfs and similar dp dsu graphs math trees Statement D Codeforces Round 976 (Div. 2) and Divide By Zero 9.0 {2020} PROGRAMMING 1500.0 Tutorial for Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
1399 C+K+S brute force constructive algorithms dfs and similar graphs greedy hashing math strings Statement C Codeforces Round 980 (Div. 1) {2023} PROGRAMMING 1500.0 135341
1865 Matrix Transformation bitmasks brute force dfs and similar graphs implementation Statement E Educational Codeforces Round 173 (Rated for Div. 2) {2043} PROGRAMMING Educational Codeforces Round 173 Editorial
2272 Mirror Maze brute force dfs and similar graphs implementation Statement M 2024-2025 ICPC Asia Jakarta Regional Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {2045} PROGRAMMING raRzKDJLPHcUnqTcwvGznwEdKiDWjEkd.pdf 1800
8617 Red Light, Green Light (Easy version) brute force dfs and similar dp graphs implementation Statement D1 Codeforces Round 1030 (Div. 2) {2118} PROGRAMMING 1250.0 Codeforces Round 1030 (Div. 2) Editorial
1603 23 Rises Again brute force data structures dfs and similar dp flows graphs implementation probabilities trees Statement H Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} PROGRAMMING 4000.0 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial
215 Statistics on Tree binary search brute force dfs and similar divide and conquer graphs trees Statement G Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2) {2222} PROGRAMMING 3500.0 Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2) Editorial