I was wondering what is the number of chess games modulo 2? Is it one, zero or is it impossible to know the answer without knowing the number of chess games itself?
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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
01:30:55
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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
01:30:55
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