#include <iostream>
#include <fstream>

using namespace std;

ifstream f("date.in");
ofstream g("date.out");

int main()
{
int m,s1,s2,i,j;
short int n,l[10000][1],aux;
s1=0;
s2=0;
f>>n>>m;
for (i=1; i<=n; i++)
    {
    f>>l[i][0]>>l[i][1];
    cout<<endl<<l[i][0]<<" "<<l[i][1];
    }
/*
for (i=1; i<n; i++)
    for (j=i; j<=n; j++)
        if (l[i][0]<l[j][0])
        {
            aux=l[i][0];
            l[i][0]=l[j][0];
            l[j][0]=aux;

            l[i][1]=m-l[i][0];
            l[j][1]=m-l[j][0];
        }
*/
for (i=1; i<=n; i++)
    cout<<endl<<"W: "<<l[i][0]<<" B: "<<l[i][1];

/*
for (i=1; i<=n/2; i++)
    s1=s1+l[i][0];
for (i=n/2+1; i<=n; i++)
    s2=s2+l[i][1];
cout<<s1<<" "<<s2;
*/
}