#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 x = a[0]; for (int i = 0; i < n; i++) { if (a[i] > x) { x = a[i]; } } int b = a[0]; for (int i = 0; i < n; i++) { if (a[i] < b) { b= a[i]; } } cout<<x-b; return 0; }