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1854 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
9526 Tree Pruning brute force data structures dfs and similar greedy sortings trees Statement C Codeforces Round 975 (Div. 1) {2018} PROGRAMMING 750.0 Editorial of Codeforces Round 975 (Div. 1, Div. 2)
27546 A Gift From Orangutan brute force dfs and similar greedy sortings Statement A Codeforces Round 979 (Div. 2) {2030} PROGRAMMING 250.0 Codeforces Round 979 Editorial