#include<bits/stdc++.h> using namespace std; int a[10005]; int main(){ int n,minn=100005,maxn=0,b; cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; if(a[i]<minn) minn=a[i]; if(a[i]>maxn) maxn=a[i]; b=maxn-minn; } cout<<b; return 0; }