#include<bits/stdc++.h>
using namespace std;

int main(){
  long p, d, r;
  long va[100000] = {0};
  long vb[100000] = {0};
  long double a, b, ea, eb, te, e;
  long double ta = 0.0;
  long double tb = 0.0;
  long double t = 0.0;

  cin>>p>>d;
  while(p--){
    cin>>r>>a>>b;
    va[r] += a;
    vb[r] += b;
    t += a+b;
  }

  for(int i = 1; i <= d; i++){
    te = floor((va[i]+vb[i])/2)+1;
    if(va[i] > vb[i]){
      ea = va[i]-te;
      eb = vb[i];
      cout<<"A "<<ea<<' '<<eb<<'\n';
    }else{
      ea = va[i];
      eb = vb[i]-te;
      cout<<"B "<<ea<<' '<<eb<<'\n';
    }
    ta += ea;
    tb += eb;
  }
  e = abs(ta-tb);
  e /= t;
  printf("%.10Lf", e);
  return 0;
}