HDU 2273

n组数据

下面n行表示车长度 车速度

结果：所有车长/最小车速

快快的水掉。。

#include<stdio.h>#include<string.h>#include<math.h>#include<set>#define ll doubleusing namespace std;inline ll Max(ll a,ll b){return a>b?a:b;}inline ll Min(ll a,ll b){return a>b?b:a;}int main(){    int n,i;    while(~scanf("%d",&n)){ll len=0,v=9999999,a,b;while(n--){scanf("%lf%lf",&a,&b);v=Min(v,b);len+=a;}printf("%.2lf\n",len/v);}    return 0;}