OJ Board

i have completed the fellowing cases


0
2 A A
25
A B
B C
C D
D E
E F
F G
G H
H I
I J
J K
K L
L M
M N
N O
O P
P Q
Q R
R S
S T
T U
U V
V W
W X
X Y
Y Z
999999999 A Z
4
A b
A B
b c
B c
18 A c
4
A b
A B
b c
B c
19 A c
5
A D
D X
A b
b c
c X
39 A X
-1



Case 1:
2
A
Case 2:
3605038190
A-B-C ...

i got WA....help~~

[java]
import java.util.*;
import java.io.*;

class Main {


public void Begin() {
String tmpstr;
StringTokenizer st;

int casenum = 1;
while((tmpstr = Main.ReadLn(255)) != null) {
st = new StringTokenizer(tmpstr);
if(st.nextToken().equals("-1"))
break;

int roadnum ...