自己写

//mch 2025 0805 GESP 一级
#include <iostream>
using namespace std;
#define int long long
int main() {
int n, a = 0, b;	
cin >> n;

	for (int i = 0; i < n; ++i) {
		b = a;
		cin >> a;
		if (a <= b) {
			cout << b;
			return 0;
		}
	}
	cout << a;
}