FZU 2104 Floor problem

题意：求向下取整的和

#include <iostream>#include <cstdio>#include <cstring>#include <algorithm>using namespace std;int n,L,R;int main(){    int t;    scanf("%d",&t);    while (t--){        scanf("%d%d%d",&n,&L,&R);        int sum = 0;        for (int i = L; i <= R; i++)            sum += n/i;        printf("%d\n",sum);    }    return 0;}