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

int main( int argc, char **argv )
{
    int rank, value, size;
    MPI_Status status;

    MPI_Init( &argc, &argv );

    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
    MPI_Comm_size( MPI_COMM_WORLD, &size );
    
	  if (rank == 0) 
	  {
		 
                 value = 5;
	        MPI_Send(&value, 1, MPI_INT, rank + 1, 0, MPI_COMM_WORLD );
	  }
	  else 
	  {
	    MPI_Recv(&value, 1, MPI_INT, rank - 1, 0, MPI_COMM_WORLD, &status );
	    if (rank < size - 1) 
		   MPI_Send( &value, 1, MPI_INT, rank + 1, 0, MPI_COMM_WORLD );
	  }
	  printf("Proces %d dostal %d\n", rank, value );
	  fflush(stdout);
   
    MPI_Finalize( );
    return 0;
}