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



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

    MPI_Init(&argc, &argv);

    int worldSize;
    MPI_Comm_size(MPI_COMM_WORLD, &worldSize);
    int worldRank;
    MPI_Comm_rank(MPI_COMM_WORLD, &worldRank);

    std::cout<<worldSize<<worldRank;
    MPI_Finalize();
    return 0;
}