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

int main(int argc, char *argv[])
{
   int rank, numprocs;

   MPI_Init(&argc, &argv);
   MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
   MPI_Comm_rank(MPI_COMM_WORLD,&rank);
   printf("Hello World from proces %d of %d.\n",rank,numprocs);
   MPI_Finalize();
}