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