#include <iostream> #include <cstdio> using namespace std; int main() { int n,a[10001],i,t=10001,m=0; cin>>n; for (i=1;i<=n;i++){ cin>>a[i];} for (i=1;i<=n;i++){ if (a[i]>=m) m=a[i]; if (a[i]<=t) t=a[i]; } cout<<m-t; return 0; }