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

int main(int argc, char **argv )
 {
  int myid, numprocs;
  MPI_Init(&argc, &argv);
  MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
  MPI_Comm_rank(MPI_COMM_WORLD, &myid); 
  printf("Hello from id %d\n", myid);
  MPI_Finalize();
  return 0;
 }