4. 나이차이

#include <iostream>
using namespace std;

int main() {
    //freopen("intput.txt", "rt", stdin)
    int n, i, a, max = -2147000000, min =  2147000000;
    cin>>n;
    for(i=1; i<=n; i++){
        cin>>a;
        if(a>max) max = a;
        if(a<min) min = a;
        
    }
    cout << max - min;
    return 0;
}