参考答案：

#include<iostream>
using namespace std;
const int N = 100010;
int a[N];
int main() 
{
    int n;
    int maxx = -10000000, minn = 10000000;
    cin >> n;
    for (int i = 0; i < n; i++) 
    {
        cin >> a[i];
        if (a[i] > maxx) 
        {
            maxx = a[i];
        }
        if (a[i] < minn) 
        {
            minn = a[i];
        }
    }
    int res = maxx - minn;
    cout << res << endl;
    return 0;
}