[水]ZOJ1915

给n个数求有多少个数均平均数大

#include<bits/stdc++.h>using namespace std;void Gao(){    int n;    double ans1=0.0;    double a[2000],ave=0.0;    cin>>n;    for (int i=0;i<n;i++)        cin>>a[i],ave+=a[i];    ave/=1.0*n;    for (int i=0;i<n;i++)    {        if (a[i]>ave+1e-10)            ans1+=1.0;    }    double ans=ans1/(1.0*n);    ans*=100;    printf("%.3lf\%\n",ans);}int main(){    int T;    cin>>T;    while (T--)        Gao();    return 0;}