Codeforces Round #173 (Div. 2)總結

a題：ios 算是一個模擬題吧，就模擬++操做。spa 代碼：code #include<cstdio> #include<cstring> #include<iostream> using namespace std; int main() { int n; while(scanf("%d",&n)!=EOF) { int ans=0; char op[10]; f

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