#include<iostream> #include<iomanip> using namespace std; int main() { int n,mxx = 0,ndd = 10000; cin>>n; int a[1001]; for(int i=1;i<=n;i++){ cin>>a[i]; } for(int i=1;i<=n;i++){ mxx = a[i]; } if(ndd > a[i]){ ndd = a[i] } } cout<<mxx-ndd;