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#include <fstream>
#include <cstring>
#include <algorithm>
using namespace std;
ifstream fin("zebughil.in");
ofstream fout("zebughil.out");
int t,i,j,n,g,x,mx,a[20],h[20],k;
int cmp(int a, int b){
return a>b;
}
int caut(int d){
for(int e=k;e>0;e--)
if(h[e]>=d)
return e;
}
int main()
{
for(t=1;t<4;t++){
fin>>n>>g;
for(i=1;i<=n;i++)
fin>>a[i];
sort(a+1,a+n+1,cmp);
for(i=1;i<=n;i++){
x=a[i];
if(mx >= x){
int p = caut(x);
int v = h[p]-x;
for(j=p;j<=k;j++)
h[j]=h[j+1];
k--;
p = caut(v);
for(j=k;j>=p+1;j--)
h[j+1]=h[j];
h[p+1]=v;
k++;
}
else{
for(j=k;j>=1;j--)
h[j+1]=h[j];
h[1]=g-x;
k++;
}
mx=h[1];
}
fout<<k<<'\n';
memset(h,0,sizeof(h));
k=0, mx=0;
}
return 0;
}