#include <iostream>
#include <mpi.h>

// stolen from the tutorial, but modified.

using namespace std;

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

    MPI_Init(&argc , &argv);

    int world_rank;

    MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);

    int world_size;
    MPI_Comm_size(MPI_COMM_WORLD, &world_size);

    int number;

    if (world_rank == 0) {
        number = 2;
        for(int i = 1; i < world_size; ++i) {
            number *= number;
            cout << "Sending " << number << "  to " << i << endl;
            MPI_Send(&number, 1, MPI_INT, i, 0, MPI_COMM_WORLD);
        }
    } else {
        MPI_Recv(&number, 1, MPI_INT, 0, 0, MPI_COMM_WORLD,
             MPI_STATUS_IGNORE);
        cout << "Process " << world_rank
            << " received number " << number << " from process 0"
             << endl;
    }

    MPI_Finalize();

    return 0;
}