Educational Codeforces Round 52 (Rated for Div. 2)

體驗極差，只要是讀題太慢，場上過了兩題，場下補了一個（時間啊）。 A. Vasya and Chocolate time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There is a special offer in Vasya's

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