#include <stdio.h>
#include <stdlib.h>
#include "mpi.h"

int main ( int argc, char* argv[] )
{
  int rank, size, c;
  MPI_Comm* comms;

  MPI_Init( &argc, &argv );
  MPI_Comm_rank( MPI_COMM_WORLD, &rank );
  MPI_Comm_size( MPI_COMM_WORLD, &size );

  comms = malloc( size * sizeof(MPI_Comm) );

  for ( c = 0; c < size; c++ ) {
    int color = MPI_UNDEFINED;
    if ( c == rank )
      color = 0;
    MPI_Comm_split( MPI_COMM_WORLD, color, 0, &comms[c] );
  }

  MPI_Finalize();

  free( comms );

  return 0;
}