#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <stdio.h>

int main(int argc, char **argv)
{
    pid_t pid;
    int status, a, b;
    if (argc != 3) {
        printf("ERROR");
        fprintf(stderr, "%d, parent, bad input", getpid());
        return 1;
    }
    a = (int)argv[1];
    b = (int)argv[2];
    if ((pid = fork()) == 0) {
        printf("%d %d %d\n", a + b, getpid(), getppid());
    } else
        pid = wait(&status);
    pid = wait(&status);
    if ((pid = fork()) == 0) {
        printf("%d %d %d\n", a * b, getpid(), getppid());
    } else
        pid = wait(&status);
    pid = wait(&status);
    return 0;
}