#include<iostream>
#include<string>
  using namespace std;

struct Person 
{
  string name;
  int ID;
  int Year_Born;
  int Month_Born;
  int Day_Born;
};

void getinfo(Person*);
//void printinfo(Person*);
int comparePerson(Person*, Person*);
int main(){
  Person *p1, *p2;
  int n;
  p1=new Person;
  p2=new Person;
  getinfo(p1);
  getinfo(p2);
  n=comparePerson(p1,p2);
  if(n<0){
    cout<<"first person, "<<p1->name<<", is older\n";
  }
  else if (n==0){
    cout<<"Both persons have the same B'day\n";
  }
  else{
    cout<<"second person, "<<p2->name<<", is older\n";
  }
}


void getinfo(Person* p)
{
  cout<<"Enter name(string)\n";
  cin>>p->name;
  cout<<"Enter ID(int)\n";
  cin>>p->ID;
  cout<<"Enter Year_Born\n";
  cin>>p->Year_Born;
  cout<<"Enter Month_Born\n";
  cin>>p->Month_Born;
  cout <<"Enter Day_Born\n";
  cin>>p->Day_Born;
}



int compareYear(Person *p1,Person *p2)
{
  return p1->Year_Born - p2->Year_Born;
}
int compareMonth(Person *p1,Person *p2)
{
  return p1->Month_Born - p2->Month_Born;
}
int compareDay(Person *p1,Person *p2)
{
  return p1->Day_Born - p2->Day_Born;
}

int comparePerson(Person* p1, Person* p2)
{
  if (p1->Year_Born != p2->Year_Born)
  return compareYear(p1,p2);
  else if (p1->Month_Born != p2->Month_Born)
  return compareMonth(p1,p2);
  else 
    return compareDay(p1,p2);
}