#include<bits/stdc++.h> using namespace std; int main(){ int a[101],n,maxn=-10000,minn=10000; 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; }