#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <vector>
#include <functional>
#include <fstream>
#include <iostream>
#define vmax (1<<17)
using namespace std;
ifstream f("zebughil.in");
ofstream g("zebughil.out");
int dp[vmax],N,G,v[20];
int main()
{
for(int qrr=1;qrr<=3;qrr++)
{
    f>>N>>G;
    int n=(1<<N);
    for(int i=1;i<=N;i++)
        f>>v[i];
    for(int i=1;i<=n;i++) dp[i]=-1;
    dp[0]=G;
    for(int i=1;i<=N;i++)
    {
        for(int j=1;j<n;j++)
        {
            if(dp[j]!=-1) dp[j]=G;
            for(int d=1;d<=N;d++)
            {
                if(j&(1<<(d-1))&&dp[j-(1<<(d-1))]-v[d]>dp[j])
                {
                    dp[j]=dp[j-(1<<(d-1))]-v[d];
                }
            }
        }
        if(dp[n-1]>-1) {g<<i<<'\n';break;}

    }
}



}