#include<iostream> using namespace std; int main(){ int m,max=0,min=99999; cin>>m; int a[m]; for(int i=0;i<=m-1;i++){ cin>>a[i]; } for(int i=0;i<=m-1;i++){ if(a[i]>max) max=a[i]; if(a[i]<min) min=a[i]; } cout<<max-min; return 0; }