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

int main(int argc, char** argv) {
    // Initialize the MPI environment
    MPI_Init(&argc, &argv);

    // Get the rank of the process and the total number of processes
    int world_rank, world_size;
    MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
    MPI_Comm_size(MPI_COMM_WORLD, &world_size);

    // Seed the random number generator to get different results each time
    srand(time(NULL) + world_rank);

    // Generate a random number at each process
    int rand_num = rand() % 100;

    printf("Process %d generated number %d\n", world_rank, rand_num);

    // Use MPI_Reduce to sum all random numbers and send the result to the root process
    int sum;
    MPI_Reduce(&rand_num, &sum, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);

    // The root process prints the result
    if (world_rank == 0) {
        printf("The sum of all random numbers is %d\n", sum);
    }

    // Finalize the MPI environment
    MPI_Finalize();
}