fzu 2104 Floor problem(水题)
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题目链接:fzu 2104 Floor problem
题目大意:给出n,l和r, 计算∑(l≤i≤r)floor(n/i).
解题思路:直接遍历l到r。
#include <stdio.h>#include <math.h>#include <stdlib.h>int main () {int cas, n, L, R;scanf("%d", &cas);while (cas--) {scanf("%d%d%d", &n, &L, &R);int ans = 0;for (int i = L; i <= R; i++)ans += n / i;printf("%d\n", ans);}return 0;}
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