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

int value = 5;

int main(){
  pid_t pid;
  pid = fork();

  if (pid==0){ // child
    value += 15;
  }
  else if (pid>0){ // parent
    wait(NULL);
    cout << "PARENT: " << value << endl;
    exit(0);
  }
}