# include<bits/stdc++.h> using namespace std; int arr[10001]; int main(){ int M,max=0,min=100000; cin>>M; for(int i=1;i<=M;i++){ cin>>arr[i]; if(arr[i]>max){ max =arr[i]; } if(arr[i]<min){ min=arr[i]; } } cout<<max-min; return 0; }