#include <stdio.h>
#include <mpi.h>
#include <malloc.h>

int main(int argc, char **argv )
 {
  int i,myid, numprocs;
  int *all,*ids;
  MPI_Status status;

  MPI_Init(&argc, &argv);
  MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
  MPI_Comm_rank(MPI_COMM_WORLD, &myid); 
  ids = (int *) malloc(numprocs * 3 * sizeof(int));
  all = (int *) malloc(numprocs * 3 * sizeof(int));
  for (i=0;i<numprocs*3;i++) ids[i] = myid;
  MPI_Alltoall(ids,3,MPI_INT,all,3,MPI_INT,MPI_COMM_WORLD);
  for (i=0;i<numprocs*3;i++)
   printf("%d\n",all[i]);
  MPI_Finalize();
  return 0;
 }