#include<bits/stdc++.h> using namespace std; int a[1010]; int main() { int n; int maxn=INT_MIN; int minn=INT_MAX; cin>>n; for(int i=0;i<n;i++) { cin>>a[i]; minn=min(minn,a[i]); maxn=max(maxn,a[i]); } cout<<maxn-minn; return 0; }