#include<iostream> #include<algorithm> using namespace std; long long a[100000] = { 0 }; int main() { int n; long long sum = 0; cin >> n; for (int i = 0; i < n; i++)scanf("%lld", &a[i]);//获取数据 sort(a, a + n);//从小到大排序 for (int i = 0; i <n-1; i++){//大循环表次数 for (int j = i; j <n; j++){//小循环退一位累加 sum += a[j]; } } cout << sum << endl; return 0; }