#include <cstdio>
#include <algorithm>
#define INF 2000000001

using namespace std;

int a[100];

int main()
{
    int T,N,G,i,p,sol,j;
    freopen ("zebughil.in","r",stdin);
    freopen ("zebughil.out","w",stdout);
    for(T=1;T<=3;++T)
    {
        scanf("%d%d", &N,&G);
        for(i=1;i<=N;++i)
            scanf("%d", &a[i]);
        sort(a+1,a+N+1);
        sol=N;
        for(i=N;i;--i)
        {
            for(p=-1,j=i-1;j;--j)
                if(a[j]<=G-a[i])
                {
                    p=j; break;
                }
            if(p!=-1)
            {
                a[i]-=a[p]; a[p]=INF; --sol;
            }
            else
                continue;
        }
        printf("%d\n", sol);
    }
    return 0;
}