AC, 还能再优化吗

#include <cstdio>
#include <algorithm>
using namespace std;
int n, a[101];
int main() {
	scanf("%d", &n);
	int maxn = 0, minn = 1001;
	for(int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
		maxn = max(maxn, a[i]);
		minn = min(minn, a[i]);
	}
	printf("%d", maxn - minn);
	return 0;
}