#include <iostream>
#include <unistd.h>
#include <sys/wait.h>

using namespace std;

int main() {
    pid_t pid;
    int myID{0};


    for(int i = 0; i < 5; ++i) {
        if (myID == 0) {
            pid = fork();
            if (pid == 0) {
               myID = i + 1;

              // cout << " I am a child, I got from fork = " << pid 
              //      << " but my pid is " << getpid() << endl;
            } else {
               //cout << " I am the parent, I got from fork = " << pid 
               //     << " but my pid is " << getpid() << endl;
            }
        }
    }

    if (myID == 0) {
       int  result;
       for(int i =0; i <5; i++) {
          wait(&result);
       }
    }

    int start{(myID-1)*20 + 1 };
    int stop {start+19};

    cout << myID << " i will sum from " << start << " to " << stop << endl;

   // cout  << "goodby from " << myID << " or " << getpid() << endl;

    return 0;
}