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312 The Potion of Great Power *special binary search data structures graphs interactive sortings two pointers Statement A Central-European Olympiad in Informatics, CEOI 2020, Day 2 (IOI, Unofficial Mirror Contest, Unrated) {1403} PROGRAMMING CEOI 2020 Online Mirror — Day 2 Tutorial
232 The Riddle of the Sphinx binary search data structures data structures interactive Statement I Good Bye 2020 {1466} PROGRAMMING 4000.0 Good Bye 2020 Editorial
3332 Guess the K-th Zero (Hard version) binary search data structures interactive Statement F2 Codeforces Round 719 (Div. 3) {1520} PROGRAMMING Editorial
3059 Gold Transfer binary search data structures greedy interactive trees Statement E Educational Codeforces Round 110 (Rated for Div. 2) {1535} PROGRAMMING 91481
1135 Catch the Mole(Easy Version) binary search constructive algorithms data structures interactive trees Statement E1 Codeforces Round 960 (Div. 2) {1990} PROGRAMMING 2000.0 Video Tutorial
1098 Catch the Mole(Hard Version) binary search data structures dfs and similar interactive trees Statement E2 Codeforces Round 960 (Div. 2) {1990} PROGRAMMING 750.0 Video Tutorial
6175 Genokraken binary search constructive algorithms data structures graphs interactive trees two pointers Statement D Codeforces Round 983 (Div. 2) {2032} PROGRAMMING 1750.0 Codeforces Round 983 (Div. 2) Editorial