题目
代码
#include<iostream>
using namespace std;
int main()
{
int total;
cin >> total;
//输入
int i;
int arr[10];
for (i = 0; i < total; i++)
{
cin >> arr[i];
}
//计算
int j;
int sum = 0;
for (i = 0; i < total; i++)
{
for (j = i + 1; j < total; j++)
{
sum += (arr[i] * 10 + arr[j]);
sum += (arr[j] * 10 + arr[i]);
//cout<<sum<<endl;
}
}
//输出
cout << sum;
}