#include "bits/stdc++.h" using namespace std; int a[1000]; int n,x=100000,y=0; int main(){ memset(a,0,sizeof(a)); cin>>n; for(int i=0;i<n;i++){ cin>>a[i]; if(a[i]<x)x=a[i]; if(a[i]>y)y=a[i]; } cout<<y-x; }