1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
#include <iostream>

using namespace std;

int main() {
	int n, k, ans = 2020, a;
	cin >> n >> k;
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= i; j++) {
			cin >> a;
			if ((i - j + 1) * j <= k) ans = min(ans, a);
		}
	cout << ans;
}