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713 Don't fear, DravDe is kind binary search data structures dp hashing Statement D Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING Codeforces Beta Round #28 (Разбор задач A и B) 2600
2140 Beaver data structures dp greedy hashing strings two pointers Statement C Codeforces Beta Round 71 {79} PROGRAMMING Codeforces Beta Round #71 Editorial 1800
2716 LIS of Sequence data structures dp greedy hashing math Statement E Codeforces Round 277 (Div. 2) {486} PROGRAMMING Codeforces Round #277(Div. 2) Editorial 2400
3432 Spy Syndrome 2 data structures dp hashing implementation sortings string suffix structures strings Statement C Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 1900
1675 Zip-line binary search data structures dp hashing Statement D Codeforces Round 345 (Div. 1) {650} PROGRAMMING Codeforces Round #345: editorial 2600
1296 Vasya and Big Integers binary search data structures dp hashing strings Statement E Educational Codeforces Round 51 (Rated for Div. 2) {1051} PROGRAMMING Educational Codeforces Round 51 Editorial 2500
1021 Morse Code binary search data structures dp hashing sortings string suffix structures strings Statement C Codeforces Round 542 [Alex Lopashev Thanks-Round] (Div. 1) {1129} PROGRAMMING 65520 2300
2299 Stack Exterminable Arrays data structures divide and conquer dp hashing Statement F Technocup 2020 - Elimination Round 1 {1223} PROGRAMMING Сodeforces Round 591 (and Technocup 2020 — Elimination Round 1) Editorial 2600
1949 Square-free division (hard version) data structures dp greedy hashing math number theory Statement E2 Codeforces Round 708 (Div. 2) {1497} PROGRAMMING 1500.0 Codeforces Round #708 Editorial 2500
1567 Labeling the Tree with Distances data structures dp hashing implementation trees Statement E Codeforces Round 856 (Div. 2) {1794} PROGRAMMING 2750.0 Codeforces Round 856 (Div. 2) Editorial
1742 Palindrome Partition binary search brute force data structures dp hashing strings Statement C Codeforces Round 873 (Div. 1) {1827} PROGRAMMING 1500.0 Codeforces Round #873 (Div. 1 & 2) Editorial 2600
1880 Light Bulbs (Hard Version) combinatorics data structures dfs and similar dp dsu graphs hashing Statement G2 Codeforces Round 916 (Div. 3) {1914} PROGRAMMING Codeforces Round 916 (Div. 3) Editorial
5413 Division + LCP (easy version) binary search data structures dp hashing string suffix structures strings Statement G1 Codeforces Round 943 (Div. 3) {1968} PROGRAMMING 129096 1900
2608 Division + LCP (hard version) binary search brute force data structures dp hashing math string suffix structures strings Statement G2 Codeforces Round 943 (Div. 3) {1968} PROGRAMMING 129096 2200
2346 Penacony brute force data structures dp hashing Statement G Codeforces Round 962 (Div. 3) {1996} PROGRAMMING Codeforces Round 962 (Div. 3) Editorial
254 Paths on a Grid data structures dp hashing Statement F Codeforces Round 1111 (Div. 2) {2247} PROGRAMMING 3500.0