#include<iostream> #include<cmath> #include<cstdio> #include<cstring> using namespace std; int main() //主函数入口 { int n,i,t; int sum = 0; cin >> n; for(i = 0; i < n; i++) { cin >>t; sum += t; } printf("%d %.5lf",sum,sum*1.0/n); return 0; //结束整个程序 }