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13269 Reorder the Array combinatorics data structures math sortings two pointers Statement A Codeforces Round 497 (Div. 1) {1007} PROGRAMMING Editorial for Codeforces Round #497 by Skyglow 1300
4825 Mysterious Crime brute force combinatorics math meet-in-the-middle two pointers Statement D Codeforces Round 519 by Botan Investments {1043} PROGRAMMING Codeforces Round #519 Editorial 1700
1234 Mercenaries bitmasks combinatorics data structures math two pointers Statement G Educational Codeforces Round 94 (Rated for Div. 2) {1400} PROGRAMMING 81942
11843 Close Tuples (hard version) binary search combinatorics implementation math sortings two pointers Statement E2 Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
15716 Close Tuples (easy version) binary search combinatorics math sortings two pointers Statement E1 Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
5022 Shuffle combinatorics math two pointers Statement D Educational Codeforces Round 120 (Rated for Div. 2) {1622} PROGRAMMING Educational Codeforces Round 120 Editorial
221 Maximum Product? brute force combinatorics dp greedy math two pointers Statement H Codeforces Global Round 21 {1696} PROGRAMMING 4000.0 Editorial of Codeforces Global Round 21
10900 The Third Problem combinatorics math two pointers Statement C Codeforces Round 804 (Div. 2) {1699} PROGRAMMING 1500.0 Codeforces Round #804 (Div. 2) Editorial
2558 LCM Sum (easy version) binary search brute force combinatorics math number theory two pointers Statement E1 Codeforces Round 813 (Div. 2) {1712} PROGRAMMING 2000.0 Codeforces Round #813 (Div. 2) Editorial
1698 LCM Sum (hard version) combinatorics data structures math number theory two pointers Statement E2 Codeforces Round 813 (Div. 2) {1712} PROGRAMMING 750.0 Codeforces Round #813 (Div. 2) Editorial
2016 Circular Mirror binary search combinatorics math two pointers Statement C COMPFEST 14 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1725} PROGRAMMING Tutorial
1880 Balance Addicts combinatorics dp math two pointers Statement E Codeforces Global Round 22 {1738} PROGRAMMING 2500.0 Editorial of Codeforces Global Round <strong>22</strong>
4829 Moving Dots binary search brute force combinatorics dp math two pointers Statement D Codeforces Round 851 (Div. 2) {1788} PROGRAMMING 2250.0 Codeforces Round #851 (Div. 2) Editorial
2235 Vlad and the Nice Paths (hard version) binary search combinatorics data structures dp math two pointers Statement G2 Codeforces Round 863 (Div. 3) {1811} PROGRAMMING 114788
31673 Counting Orders combinatorics math sortings two pointers Statement A Codeforces Round 873 (Div. 1) {1827} PROGRAMMING 500.0 Codeforces Round #873 (Div. 1 & 2) Editorial 1100
53275 Ski Resort combinatorics math two pointers Statement C Codeforces Round 878 (Div. 3) {1840} PROGRAMMING Codeforces Round #878 (Div.3) Editorial
1466 Sets of Complementary Sums combinatorics dp math two pointers Statement E Educational Codeforces Round 181 (Rated for Div. 2) {2125} PROGRAMMING Educational Codeforces Round 181 Editorial
1390 Sum of Fractions binary search combinatorics greedy math two pointers Statement F Educational Codeforces Round 188 (Rated for Div. 2) {2204} PROGRAMMING Educational Codeforces Round 188 Editorial