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#include <bits/stdc++.h>
using namespace std;
ifstream fin("zebughil.in");
ofstream fout("zebughil.out");
const int NMAX = (1<<17)+5;
int dp[NMAX],a[20],n,G,sum;
int main()
{
for(int t=1;t<=3;t++){
fin >> n >> G;
for(int i=0;i<n;i++) fin >> a[i];
for(int i=1;i<(1<<n);i++){
sum=0;
for(int j=0;j<n;j++){
if((i&(1<<j))!=0)
sum+=a[j];
}
if(sum<=G) dp[i]=1;
else {
dp[i]=n;
for(int j=(i&(i-1));j>=1;j=(j-1)&i){
if(dp[j]+dp[i^j]<dp[i])
dp[i]=dp[j]+dp[i^j];
}
}
}
fout << dp[(1<<n)-1] << '\n';
}
return 0;
}