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6485 Integral Array brute force constructive algorithms data structures math Statement B Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics) {1648} PROGRAMMING 1000.0 Codeforces Round #775 Editorial
2494 Rain brute force data structures math Statement B Codeforces Round 810 (Div. 1) {1710} PROGRAMMING 1000.0 Codeforces Round #810 Editorial
5551 Meta-set brute force combinatorics data structures hashing math Statement D Codeforces Round 824 (Div. 2) {1735} PROGRAMMING 1750.0 Codeforces Round #824 — editorial
4961 The BOSS Can Count Pairs brute force data structures math Statement B Codeforces Round 875 (Div. 1) {1830} PROGRAMMING 1000.0 Codeforces Round #875 (Div.1 + Div. 2) Editorial
7921 Rating System brute force data structures dp greedy implementation math Statement D Educational Codeforces Round 151 (Rated for Div. 2) {1845} PROGRAMMING 117791
3928 Sum of Progression brute force data structures implementation math Statement F Codeforces Round 920 (Div. 3) {1921} PROGRAMMING Editorial for Codeforces Round 920 (Div. 3)
15892 LR-remainders brute force data structures implementation math Statement C Codeforces Round 927 (Div. 3) {1932} PROGRAMMING 126196
1167 Make a Palindrome brute force data structures dp greedy math Statement F Educational Codeforces Round 169 (Rated for Div. 2) {2004} PROGRAMMING
5810 Attribute Checks brute force data structures dp implementation math Statement D Educational Codeforces Round 170 (Rated for Div. 2) {2025} PROGRAMMING
1283 MEXimize the Score brute force combinatorics data structures dp math Statement E Codeforces Round 979 (Div. 2) {2030} PROGRAMMING 2000.0
9668 Sakurako, Kosuke, and the Permutation brute force data structures dfs and similar ds fft greedy math Statement E Codeforces Round 981 (Div. 3) {2033} PROGRAMMING