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3846 Spanning Tree with One Fixed Degree constructive algorithms dfs and similar dsu graphs greedy Statement F2 Codeforces Round 544 (Div. 3) {1133} PROGRAMMING Codeforces Round #544 (Div. 3) Editorial 2200
10325 Harmonious Graph constructive algorithms dfs and similar dsu graphs greedy sortings Statement D Codeforces Round 600 (Div. 2) {1253} PROGRAMMING Editorial 1700
21107 Solve The Maze constructive algorithms dfs and similar dsu graphs greedy implementation shortest paths Statement D Codeforces Round 648 (Div. 2) {1365} PROGRAMMING 1500.0 Editorial — Codeforces Round #648 1700
2100 Phoenix and Earthquake constructive algorithms dfs and similar dsu graphs greedy trees Statement F Codeforces Global Round 14 {1515} PROGRAMMING 3250.0 Editorial
3125 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
2750 Cars constructive algorithms dfs and similar dsu graphs greedy sortings Statement E Codeforces Round 772 (Div. 2) {1635} PROGRAMMING 2250.0 Codeforces Round #772 Editorial
4113 Tokitsukaze and Two Colorful Tapes constructive algorithms dfs and similar dsu graphs greedy Statement C Codeforces Round 789 (Div. 1) {1677} PROGRAMMING 1250.0 Tutorial
4589 Tree Orientation (Easy Version) constructive algorithms dfs and similar dsu graphs greedy trees Statement D1 Codeforces Round 1086 (Div. 2) {2208} PROGRAMMING 1250.0 Tutorial