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2017
5月 25
Codeforces Round #415 (Div. 2)
4月 25
Codeforces Round #410 (Div. 2)
3月 29
Educational Codeforces Round 18
2月 27
Codeforces Round #402 (Div. 2)
2月 23
Codeforces Round #399 (Div.1 + Div.2, combined)
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