#include<fstream>
using namespace std;
ifstream f("lapte.in");
ofstream g("lapte.out");
long long n,l,t,m,k,i,j,a[130],b[130],c[130][130],d[130][130],sol;

void afisare(int x, int y, int z)
{
    if(x!=0)
    {
       afisare(x-1,y-c[x][y],y);
       g<<c[x][y]<<" "<<(t-c[x][y]*a[x])/b[x]<<"\n";
    }
}

int main()
{
    f>>n>>l;
    for(i=1;i<=n;i++) f>>a[i]>>b[i];
    for(t=1;t<=100;t++)
    {
        for(i=0;i<=n;i++)
        for(j=0;j<=l;j++)
        d[i][j]=-101;
        d[0][0]=0;
        for(i=1;i<=n;i++)
        {
            for(k=0;k<=l;k++)
            {
                for(j=0;j*a[i]<=t;j++)
                if(d[i][k]<d[i-1][k-j]+(t-j*a[i])/b[i])
                {
                    c[i][k]=j;
                    d[i][k]=d[i-1][k-j]+(t-j*a[i])/b[i];
                }
            }
        }
        if(d[n][l]>=l)
        {
            g<<t<<"\n";
            afisare(n,l,t);
            return 0;
        }
    }
    return 0;
}