人口普查

这题目用java是会超时的，我提供java代码，自己对照去写c++，用c++最后一个测试点100ms左右，估计用java需要500-600ms，会超时，一般200ms的用java能过的可能性就比较小了，倒数第二个测试点如果出现段错误就是你的数组越界了，没有考虑全部错误的情况，输出0，最后一个测试点数据有点大，如果是错误，就是放进容器时的判断条件有错。

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

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

public class Main {

    public static int year, month, day;

    public static void main(String[] args) {
        List<Person> list = new ArrayList<Person>();
        Scanner cin = new Scanner(System.in);
        int n = cin.nextInt(), count = 0;
        for (int i = 0; i < n; ++i) {
            String name = cin.next();
            String[] c = cin.next().split("/");
            year = Integer.parseInt(c[0]);
            month = Integer.parseInt(c[1]);
            day = Integer.parseInt(c[2]);
            if (isCheck()) {
                list.add(new Person(year, month, day, name));
                ++count;
            }
        }
        if (count > 0) {
            Collections.sort(list, new Comparator<Person>() {

                @Override
                public int compare(Person o1, Person o2) {
                    if (o1.year != o2.year) {
                        return o1.year - o2.year;
                    } else if (o1.month != o2.month) {
                        return o1.month - o2.month;
                    } else {
                        return o1.day - o2.day;
                    }
                }
            });
            System.out.println(count + " " + list.get(0).name + " " + list.get(count-1).name);
        }
        else {
            System.out.println(0);
        }
    }

    public static boolean isCheck() {
        if (year > 2014 || year < 1814)
            return false;
        else if (year == 2014) {
            if (month > 9)
                return false;
            else if (month == 9) {
                if (day > 6)
                    return false;
            }
        } else if (year == 1814) {
            if (month < 9)
                return false;
            else if (month == 9) {
                if (day < 6)
                    return false;
            }
        }
        return true;
    }
}

========================================Talk is cheap, show me the code=======================================