#include<bits/stdc++.h> using namespace std; int a[110]; int main (){ freopen("len.in", "r", stdin); freopen("len.out", "w", stdout); int n; cin >> n; for (int i = 0;i < n;i++){ cin >> a[i]; } int c = 1e9; for (int i = 0;i < n;i++){ for (int j = i + 1;j < n;j++){ if (a[i] >= a[j]){ if (a[i] - a[j] < c){ c = a[i] - a[j]; } }else { if (a[j] - a[i] < c){ c = a[j] - a[i]; } } } } cout << c; return 0; }