#include<cstdio>
#include<cstring>
int n,g,i,j,a[18][1<<18],v[20],max;

void back(int i,int j,int G,int start,int start2)
{
	for(int k=start,x = start2;k<(1<<n);k<<=1,x++)
		if((j&k) == 0)
			if(v[x]+G <=g)
			{
				a[i+1][j+k] = 1;
				back(i,j+k,G+v[x],k<<1,x+1);
			}
}

int main()
{
	freopen("zebughil.in","r",stdin);
	freopen("zebughil.out","w",stdout);
	for(int xyz = 1; xyz <= 3; xyz++)
	{
		scanf("%d %d",&n,&g);
		max=(1<<n)-1;
		for(i=1;i<=n;i++)
			scanf("%d",&v[i]);
		memset(a,0,sizeof(a));
		a[0][0]=1;
		for(i=0;i<17;i++)
			for(j=0;j<max;j++)
				if(a[i][j])
					back(i,j,0,1,1);
		for(i=1;i<n;i++)
			if(a[i][max]) break;
		printf("%d\n",i);
	}
	return 0;
}