#include<bits/stdc++.h> using namespace std; int main() { int a[10001],maxn,minn,m; cin>>m; for(int i=0;i<m;i++) { cin>>a[i]; if(i==0) maxn=minn=a[i]; if(a[i]>maxn) maxn=a[i]; if(a[i]<minn) minn=a[i]; } cout<<maxn-minn; return 0; }