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Codeforces
2015/10
2015/10/07 - Codeforces #325 Div. 2 D Dima and Lisa
2015/10/05 - Codeforces #323 Div. 2 D Once Again...
2015/10/04 - Codeforces #323 Div. 2 C GCD Table
2015/10/04 - Codeforces #323 Div. 2 B Robot's Task