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2233 Kuro and GCD and XOR and SUM binary search bitmasks brute force data structures dp dsu greedy math number theory strings trees Statement D Codeforces Round 482 (Div. 2) {979} PROGRAMMING 1750.0 Codeforces Round #482 (Div. 2) Editorial 2200
9380 Phoenix and Science binary search bitmasks constructive algorithms greedy math Statement D Codeforces Round 638 (Div. 2) {1348} PROGRAMMING 2000.0 Codeforces Round #638 (Div. 2) Editorial 1900
14195 Strange Test binary search bitmasks brute force greedy math Statement C Codeforces Round 769 (Div. 2) {1632} PROGRAMMING 1500.0 Editorial of Codeforces Round #769
1102 The Boss's Identity binary search bitmasks data structures dfs and similar greedy math sortings Statement F Codeforces Round 882 (Div. 2) {1847} PROGRAMMING 3000.0 Tutorial
1682 Distance Learning Courses in MAC binary search bitmasks data structures greedy implementation math Statement E Codeforces Round 932 (Div. 2) {1935} PROGRAMMING 2500.0 Codeforces Round #932 (Div. 2) Editorial
17037 Cat, Fox and the Lonely Array binary search bitmasks data structures greedy math two pointers Statement B Codeforces Round 945 (Div. 2) {1973} PROGRAMMING 1000.0 Editorial for Codeforces Round #945 (Div. 2) 1300
310 Fuzzy Concatenation (Easy Version) binary search bitmasks brute force data structures greedy string suffix structures Statement E1 Codeforces Round 1079 (Div. 1) {2196} PROGRAMMING 2000.0 Tutorial
7893 Test Generator binary search bitmasks greedy math Statement C Educational Codeforces Round 187 (Rated for Div. 2) {2203} PROGRAMMING Educational Codeforces Round 187 Editorial