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


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

  MPI_Init (&argc, &argv);    /* starts MPI */
  MPI_Comm_rank (MPI_COMM_WORLD, &rank);	/* get current process id */
  MPI_Comm_size (MPI_COMM_WORLD, &size);	/* get number of processes */
int i,s=0;
for(i=1;i<=100;i++)
s+=i;
printf("%d\n",s);
  printf( "Hello world from process %d of %d\n", rank, size );
  MPI_Finalize();
  return 0;
}