#include <stdlib.h>
#include <stdio.h>

int main()
{
	int dnu, penez;
	int cena[100000];

	scanf("%d", &dnu);
	if (dnu != 0) scanf("%d", &penez);

	while (dnu != 0)
	{
		for (int i = 0; i < dnu; i++) scanf("%d", &cena[i]);

		int max = 0;

		for (int a = 0; a < dnu-1; a++)
		{
			int p = penez / cena[a];
			if (p == 0) continue;

			for (int b = a+1; b < dnu; b++)
			{
				int nm = p * ( cena[b] - cena[a] );
				if (max < nm) max = nm;
			}
		}

		printf("%d\n", max);

		scanf("%d", &dnu);
		if (dnu != 0) scanf("%d", &penez);
	}
	return 0;
}