Codeforces Round #540 (Div. 3)--B. Tanya and Candies（前缀和的运用与变化）

Tanya and Candies 题目链接http://codeforces.com/problemset/problem/1118/B time limit per test:1 second memory limit per test:256 megabytes Examples Input 7 5 5 4 5 5 5 6 Output 2 Input 8 4 8 8 7 8 4 4 5 O

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