1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#include <iostream>

int main()
{
	int n, k;
	std::cin >> n >> k;

	int min;
	std::cin >> min;

	int currentYear;
	for(unsigned int i = 1; i < n; ++i)
	{
		for(unsigned int l = 1; l <= i+1; ++l)
		{
			std::cin >> currentYear;
			if(l * (i+1-l+1) <= k)
				if(currentYear < min)
					min = currentYear;
		}
	}
	std::cout << min << std::endl;
	return 0;
}