#include <iostream>
#include <fstream>
#include <cstring>
#define nmax 105
using namespace std;
int d[nmax][nmax],a[nmax][nmax];
int n,l,x,y,m,ans;
pair <int,int> v[nmax];
ofstream fout("lapte.out");
int din(int t)
{   memset(d,-1,sizeof(d));

    d[0][0]=0;
    for(int i=0;i<n;i++)
        for(int j=0;j<=l;j++)
           for(int k=0; k<=t/v[i+1].first;k++)
               if(d[i][j]!=-1)
               {
                   int q=(t-k*v[i+1].first)/v[i+1].second;
                   if(d[i+1][j+k]<d[i][j]+q)
                   {
                       d[i+1][j+k]=d[i][j]+q;
                       a[i+1][j+k]=k;
                   }

               }

    if(d[n][l]>=l) return 1;
    return 0;

}
void afisare(int i,int L)
{   if(i>1) afisare(i-1,L-a[i][L]);
    fout<<a[i][L]<<' '<<((ans-a[i][L]*v[i].first)/v[i].second)<<'\n';
}
int main()
{
    ifstream fin("lapte.in");
    fin>>n>>l;
    for(int i=1;i<=n;i++) fin>>v[i].first>>v[i].second;
    x=1;y=100;
    while(x<=y)
    {
        m=(x+y)/2;
        if(din(m))
        {
            ans=m;
            y=m-1;
        }
        else x=m+1;
    }
    fout<<ans<<'\n';
    din(ans);
    afisare(n,l);
    return 0;
}