#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <mpi.h>
#include <omp.h>

int rank, proc_num;

int main(int argc, char **argv)
{
    int error = MPI_Init(&argc, &argv);
    if (error != MPI_SUCCESS) {
        fprintf (stderr, "MPI_Init error \n");
        return 1;
    }
    MPI_Comm_size(MPI_COMM_WORLD, &proc_num);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    printf("%d / %d\n", rank, proc_num);
#pragma omp parallel
{
    printf("%d / %d: %d\n", rank, proc_num, omp_get_num_threads());
}
    MPI_Finalize();
    return 0;
}