#include<bits/stdc++.h> using namespace std; int main(){ int n,c[1000],minn=0x7fffffff,maxn=0x80000000; cin>>n; for(int i=0;i<n;i++){ cin>>c[i]; maxn=maxn<c[i]?c[i]:maxn; minn=minn>c[i]?c[i]:minn; } cout<<maxn-minn; }