What's wrong in my program?(It passed all my tests)
import java.io.*;

public class Task1196 {
    public static void main(String[] args) throws IOException {
        StreamTokenizer in = new StreamTokenizer(
                new InputStreamReader(
                        System.in
                )
        );
        in.nextToken();
        int n = (int) in.nval;
        long prep[] = new long[n];
        for(int i=0;i<n;i++){
            in.nextToken();
            prep[i]=(long)in.nval;
        }
        long ans = 0;
        in.nextToken();
        long m =(long)in.nval;
        for(int i=0;i<m;i++){
            in.nextToken();
            if(binSearch(prep,(long)in.nval)){
                ans++;
            }
        }
        System.out.print(ans);
    }
    public static boolean binSearch(long[] prep,long date){
        int down=0;
        int up = prep.length-1;
        int m;
        while(true){
            m= (up+down)/2;
            if(prep[m]>date){
                up=m-1;
            }else if(prep[m]<date){
                down=m+1;
            }else{
                return true;
            }
            if(down>up){
                return false;
            }
        }
    }
}

There are some problems with Java now..
Every program in Java gets wa1 (

Edited by author 26.10.2008 05:20

Really? It's sux >_<

I get known that there is another scanner required:
Scanner scanner = new Scanner(System.in, "ISO-8859-1");
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, "ISO-8859-1"));
PrintWriter writer = new PrintWriter(new OutputStreamWriter(System.out, "ISO-8859-1"));

It's written here:
http://acm.timus.ru/help.aspx?topic=java (look at the bottom of the page)

I just like to know WHERE and HOW I should paste this new scanner into my program in order to it behave!


Edited by author 29.10.2009 00:44

"Output the number of dates in the student's that are also contained in Professor's list."
you needn't count the time it appears ...
count the amount of appear numbers in list 2 is just OK...

On C++ the same problem now.

yangdong is right.

Hint: use list or set for first dates and you will be happy. ^_^

P.S.: Sorry for my English :)

Edited by author 21.10.2011 15:39