Can't understand why we need date starting from which person was the oldest.
Also can't understand why this solution gets WA3.
Can anyone help?

import java.util.GregorianCalendar;
import java.util.Scanner;

public class P1759 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.valueOf(scanner.nextLine());
        GregorianCalendar birth = (GregorianCalendar) GregorianCalendar.getInstance();
        GregorianCalendar death = (GregorianCalendar) GregorianCalendar.getInstance();
        long max = 0;
        int result = 0;
        long longestLiveDeath = 0;
        for (int i = 0; i < n; i++) {
            String[] dates = scanner.nextLine().split("\\s");

            set(birth, dates[0]);
            set(death, dates[2]);
            long liveTime = death.getTimeInMillis() - birth.getTimeInMillis();
            if (liveTime > max || (liveTime == max && death.getTimeInMillis() < longestLiveDeath)) {
                max = liveTime;
                longestLiveDeath = death.getTimeInMillis();
                result = i;
            }
        }
        System.out.println(result + 1);
    }

    private static void set(GregorianCalendar date, String sDate) {
        String[] split = sDate.split("\\.");
        date.set(Integer.valueOf(split[2]), Integer.valueOf(split[1]), Integer.valueOf(split[0]));
    }
}

Edited by author 24.03.2011 13:45