题解 | #KiKi和酸奶#
知识点：运算
#include <iostream>
using namespace std;
int main() {
int n = 0;
int h = 0;
int m = 0;
int res = 0;
cin >> n >> h >> m;
m = (m % h == 0) ? m : m + h;
res = n - m / h ;
cout << res;
return 0;
}
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