#include <algorithm> #include <iostream> #include <fstream> #include <cstdio> #include <string> #include <vector> #include <stack> #include <queue> #include <cmath> #include <functional> #include <cassert> #include <iomanip> #include <array> #include <time.h> #include <limits.h> #include <numeric> #define debug(x) cout<<#x<<": "<<x<<endl #define rep(i,n) for (int i=0;i<(n);i++) #define FOR(i,a,b) for (int i=(a);i<=(b);i++) using namespace std; void solve(){ #ifdef _WIN32 istream &cin = ifstream("input.txt"); #endif int n; vector<int> v; cin >> n; if (n == 1){ cout << 0 << endl; return; } rep(i, n){ int tmp; cin >> tmp; v.push_back(tmp); } sort(v.begin(), v.end()); v.erase(unique(v.begin(), v.end()), v.end()); if (v.size() == 1){ cout << 0 << endl; return; } int ans = INT_MAX; rep(i, v.size() - 1){ ans = min(ans, v[i + 1] - v[i]); } cout << ans << endl; } int main(){ cin.tie(0); ios::sync_with_stdio(false); solve(); return 0; }