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429 A task for substrings data structures string suffix structures strings Statement G Codeforces Round 857 (Div. 1) {1801} PROGRAMMING 3500.0 Codeforces Round #857 Editorial
571 Polyathlon data structures hashing string suffix structures strings Statement I 2024-2025 ICPC, NERC, Southern and Volga Russian Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams) {2038} PROGRAMMING 2500