#include <bits/stdc++.h> using namespace std; int main() { int n,a[101],sum1=0,max1,min1;//sum1总分 cin>>n; cin>>a[1]; sum1=a[1]; max1=a[1]; min1=a[1]; for(int i =2;i<=n;i++){ cin>>a[i]; sum1+=a[i];//sum=sum+a[i]; if(max1<a[i])max1=a[i]; if(min1>a[i])min1=a[i]; } printf("%d %.2lf %d %d",sum1,sum1*1.0/n,max1,min1); return 0; }