#include <bits/stdc++.h> using namespace std; int main() { int n;//1.输入 cin >> n;//2.n个整数 int a[n];//3. n个整数保存到数组 for (int i = 0; i < n; i++) { cin >> a[i]; } int s = 0; for (int i = 0; i < n; i++) { s = s + a[i]; } cout << s << endl; double x; x = s * 1.0 / n; printf("%.2f", x); int m = a[0]; int I = 0; for (int i = 1; i < n; i++) { if (a[i] > m) { m = a[i]; I = i; } } cout <<endl<< m << " " ; int u = a[0]; int h = 0; for (int i = 1; i <n; i++) { if (a[i] < u) { u=a[i]; h=i; } } cout << u << " " ; return 0; }