网易互娱5道编程题第三题，输入怎么搞得，输入弄了很久

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
class DataType {
    long time;
    int flow;
    public DataType(long time,int flow) {
        this.time = time;
        this.flow = flow;
    }
}
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); 
        int N = Integer.parseInt(br.readLine());
        int index = 0;
        List<DataType> list = new ArrayList<DataType>();
        while (index < N) {//注意while处理多个case
            String str = br.readLine();
            SimpleDateFormat sdf= new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
            try {
                Date dt2 = sdf.parse(str.substring(0, 19));
                int flow = Integer.parseInt(str.substring(20));
                DataType dataType = new DataType(dt2.getTime() / 1000, flow);
                list.add(dataType);
            } catch (ParseException e) {
                e.printStackTrace();
            }
            ++index;
        }
        int M = Integer.parseInt(br.readLine());
        index = 0;
        while (index < M) {//注意while处理多个case
            String str = br.readLine();
            System.out.println("in");
            SimpleDateFormat sdf= new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
            try {
                Date dt2 = sdf.parse(str.substring(0,19));
                long time1 = dt2.getTime() / 1000;
                Date dt3 = sdf.parse(str.substring(21));
                long time2 = dt3.getTime() / 1000;
                int sum = 0;
                for(int i = 0;i < list.size(); ++i) {
                    if(list.get(i).time >= time1 && list.get(i).time <= time2) {
                        sum += list.get(i).flow;
                    }
                }
                
                System.out.println(sum);
                
            } catch (ParseException e) {
                e.printStackTrace();
            }
            ++index;
        }
        
    }
}

大神帮我看看，最后一个用例就是没输出

	5



	02/12/2016 00:00:00 10



	02/18/2016 12:00:00 45



	02/18/2016 23:59:59 8



	02/19/2016 08:00:15 20



	02/22/2016 13:00:00 31



	4



	01/01/2014 00:00:00 01/01/2017 00:00:00



	11/11/2016 11:11:11 02/14/2017 00:05:20



	02/12/2016 00:00:00 02/18/2016 23:00:00



	02/18/2016 12:00:00 02/18/2016 12:00:00  <- 这个总是没有输出