#include <bits/stdc++.h> using namespace std; int s[10000]; int main() { int n; cin >> n; for(int i = 0;i < n;++i) cin >> s[i]; int max = s[0]; int min= s[0]; for(int i = 1;i < n;++i) { if(max < s[i]) { max = s[i]; } if(min > s[i]) { min = s[i]; } } cout << max-min ; return 0; }