#include <stdio.h>
#include <mpi.h>
int main(int argc, char *argv[])
{
	int rank, size;
	MPI_Init(&argc, &argv);
	MPI_Comm_rank(MPI_COMM_WORLD, &rank);
	MPI_Comm_size(MPI_COMM_WORLD, &size);
	printf("Hello world! I am %d of %d\n", rank, size);
	MPI_Finalize();
	return(0);
}