#include<bits/stdc++.h> using namespace std; int main() { int n,a[10000],max=0,min=100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000; cin>>n; for(int i=0;i<n;i++) cin>>a[i]; for(int i=0;i<n;i++) { if(a[i]>=max) max=a[i]; if(a[i]<=min) min=a[i]; } cout<<max-min; return 0; }