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5455 Print a 1337-string... combinatorics constructive algorithms math strings Statement D Educational Codeforces Round 70 (Rated for Div. 2) {1202} PROGRAMMING 68972 1900
1413 Oolimry and Suffix Array combinatorics constructive algorithms math string suffix structures Statement E Codeforces Round 723 (Div. 2) {1526} PROGRAMMING 2500.0 Codeforces Round #723 (Div. 2) Editorial
2370 Another Wine Tasting Event combinatorics constructive algorithms strings Statement G SWERC 2022-2023 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1776} PROGRAMMING
3035 Guess Game bitmasks combinatorics constructive algorithms data structures games math probabilities strings trees Statement E Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) {1864} PROGRAMMING 2000.0 Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) Editorial
2015 Permutations Harmony brute force combinatorics constructive algorithms greedy hashing implementation math Statement E Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} PROGRAMMING 2000.0 Rayan 2024 Selection Round Editorial
30865 Having Been a Treasurer in the Past, I Help Goblins Deceive combinatorics constructive algorithms strings Statement B Codeforces Round 1006 (Div. 3) {2072} PROGRAMMING Codeforces Round 1006 (Div. 3) Editorial
10510 Sub-RBS (Easy Version) combinatorics constructive algorithms dp greedy strings two pointers Statement B1 Codeforces Round 1073 (Div. 1) {2190} PROGRAMMING 750.0 Codeforces Round 1073 (Div. 1, Div. 2) Editorial