题解

#include<bits/stdc++.h>
using namespace std;
long long n,a[10000001],maxn=-9999999,minn=9999999999;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
		cin>>a[i];
        maxn=max(maxn,a[i]);
        minn=min(minn,a[i]);
    }
    cout<<maxn-minn;
    return 0;
}