UVA - 12541 - Birthdates

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
  
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer("");
        int n=Integer.parseInt(br.readLine());
        Birth[] people=new Birth[n];
        for(int i=0;i<people.length;i++){
            String[]str=br.readLine().split(" ");
            people[i]=new Birth(str[0], Integer.parseInt(str[1]), Integer.parseInt(str[2]), Integer.parseInt(str[3]));
        }
        Arrays.sort(people);
        sb.append(people[0].getName()).append("\n");
        sb.append(people[n-1].getName()).append("\n");
        System.out.print(sb);
    }
}
class Birth implements Comparable<Birth>{
    private String name;
    private int  day,month,year;

    public Birth(String name, int day, int month, int year) {
        this.name = name;
        this.day = day;
        this.month = month;
        this.year = year;
    }

    public String getName() {
        return name;
    }

    public int getDay() {
        return day;
    }

    public int getMonth() {
        return month;
    }

    public int getYear() {
        return year;
    }
  
    @Override
    public int compareTo(Birth x) {
        if(this.year>x.getYear()){
            return -1;
        }else if(this.year<x.getYear()){
            return 1;
        }else{
            if(this.month>x.getMonth()){
                return -1;
            }else if(this.month<x.getMonth()){
                return 1;
            }else{
                if(this.day>x.getDay()){
                  return -1;
                }else{
                  return 1;
                }
            }
        }
    }
  
}