为什么我的输出总是0？请大佬看看我的代码

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
	int n;
	int b = 1001;
	cin >> n;
	int a[n];
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	sort(a, a + n);
	cout << a[0] << endl;
	return 0;
}