#include<iostream> #include<cstdio> using namespace std; int main(){ int i,n,max=0,min=10000; cin>>n; int a[n]; for (i=0;i<n;i++){ cin>>a[i]; if(a[i]>max) max=a[i]; if(a[i]<min) min=a[i]; } cout<<max-min<<endl; return 0; }