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3135 Roman Digits brute force combinatorics dp greedy math Statement B Codeforces Round 493 (Div. 1) {997} PROGRAMMING 60357 2000
203 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
857 Laboratory on Pluto brute force combinatorics dp fft greedy math Statement F Codeforces Round 843 (Div. 2) {1775} PROGRAMMING 3000.0 Codeforces Round #843 (Div. 2) Editorial