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16727 Little Girl and Maximum XOR bitmasks dp greedy implementation math Statement D Codeforces Round 169 (Div. 2) {276} PROGRAMMING Codeforces Round #169 — Unofficial Editorial 1800
2609 Fox and Minimal path bitmasks constructive algorithms graphs implementation math Statement B Codeforces Round 228 (Div. 1) {388} PROGRAMMING Codeforces Round #228 — Editorial 2000
4862 Three Logos bitmasks brute force constructive algorithms geometry implementation math Statement D Codeforces Round 322 (Div. 2) {581} PROGRAMMING Codeforces Round #322 (Div.2) Editorial 1700
1432 Anton and School bitmasks constructive algorithms implementation math Statement F Codeforces Round 379 (Div. 2) {734} PROGRAMMING Tutorial of Codeforces Round #379 (Div. 2) 2600
3783 Mahmoud and Ehab and the xor-MST bitmasks dp graphs implementation math Statement E Codeforces Round 473 (Div. 2) {959} PROGRAMMING Codeforces round #473 editorial 1900
18498 Adding Powers bitmasks greedy implementation math number theory ternary search Statement C Educational Codeforces Round 83 (Rated for Div. 2) {1312} PROGRAMMING 74640
3482 Perfect Triples bitmasks brute force constructive algorithms divide and conquer greedy implementation math Statement C Codeforces Round 633 (Div. 1) {1338} PROGRAMMING 1500.0 Editorial
3542 Decryption bitmasks constructive algorithms implementation math number theory Statement E Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 2250.0 Codeforces Round #671 Editorial
4488 Almost Sorted binary search bitmasks combinatorics constructive algorithms dp implementation math Statement B Codeforces Round 715 (Div. 1) {1508} PROGRAMMING 1000.0 Codeforces Round #715 Editorial
4790 Reverse bitmasks implementation math strings Statement F Codeforces Round 760 (Div. 3) {1618} PROGRAMMING Codeforces Round #760 (Div. 3) Editorial
7317 BA-String bitmasks brute force dp greedy implementation math shortest paths Statement C Educational Codeforces Round 119 (Rated for Div. 2) {1620} PROGRAMMING 98061
2797 Candy Party (Hard Version) bitmasks constructive algorithms dp graphs greedy implementation math Statement B2 Codeforces Round 896 (Div. 1) {1868} PROGRAMMING 750.0 Codeforces Round 896 (Div. 1, Div. 2) Editorial
8420 Candy Party (Easy Version) bitmasks constructive algorithms graphs greedy implementation math Statement B1 Codeforces Round 896 (Div. 1) {1868} PROGRAMMING 500.0 Codeforces Round 896 (Div. 1, Div. 2) Editorial
1523 Trees and XOR Queries Again bitmasks data structures dfs and similar implementation math trees Statement F Educational Codeforces Round 159 (Rated for Div. 2) {1902} PROGRAMMING Educational Codeforces Round 159 Editorial
17064 XOR-distance bitmasks dp greedy implementation math Statement C Codeforces Round 922 (Div. 2) {1918} PROGRAMMING 1250.0 Codeforces Round #922 (Div. 2) Editorial
15116 Vlad and an Odd Ordering binary search bitmasks data structures dp implementation math number theory Statement E Codeforces Round 928 (Div. 4) {1926} PROGRAMMING 126132
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
6431 Turtle and an Incomplete Sequence bitmasks constructive algorithms greedy implementation math Statement C Codeforces Round 949 (Div. 2) {1981} PROGRAMMING 1500.0 Simplified Chinese Tutorial
18626 Bitwise Balancing bitmasks implementation math Statement C Codeforces Round 976 (Div. 2) and Divide By Zero 9.0 {2020} PROGRAMMING 1250.0 Tutorial for Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
1128 Infinite Sequence (Hard Version) bitmasks constructive algorithms data structures dp implementation math Statement D2 Codeforces Round 1007 (Div. 2) {2071} PROGRAMMING 1250.0 Codeforces Round 1007 (Div. 2) Editorial
2521 Counting Necessary Nodes bitmasks divide and conquer implementation math Statement F Codeforces Round 1009 (Div. 3) {2074} PROGRAMMING Codeforces Round 1009 (Div. 3) — Editorial
3727 Finding OR Sum bitmasks constructive algorithms implementation interactive math Statement B Codeforces Round 1008 (Div. 1) {2077} PROGRAMMING 1000.0 Codeforces Round 1008 (Div. 1, Div. 2) Editorial
14841 SUMdamental Decomposition bitmasks constructive algorithms greedy implementation math Statement B Codeforces Round 1022 (Div. 2) {2108} PROGRAMMING 1250.0 Codeforces Round 1022 Editorial
124 Inter Active (Hard Version) binary search bitmasks constructive algorithms graphs implementation interactive math probabilities Statement G2 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} PROGRAMMING 2750.0 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial
8937 Removal of a Sequence (Easy Version) binary search bitmasks geometry implementation math number theory Statement D1 Educational Codeforces Round 184 (Rated for Div. 2) {2169} PROGRAMMING Educational Codeforces Round 184 Editorial
1156 Product of Closures bitmasks brute force constructive algorithms dp greedy implementation math Statement E Educational Codeforces Round 192 (Rated for Div. 2) {2242} PROGRAMMING