OJ Board

Hello,
I've passed all the test cases in this thread but still got WA. Would somebody give me any idea about my code?
Also appreciate critical test cases.

problem solved.

just be careful the line below.

cout << endl;
if (test_case != 1) //lacked this line, WA!!!!!!!
cout << endl;

I tried to use stack to implement the work and my code got correct answers always. I don't know where is the bug. Can somebody help me?

#include <stdio.h>
#include <string.h>
main()
{
char stack[130];
char c[130];
char s[130];
int n;
int i, j;
int len;
scanf("%d\n", &n);
for(i=0; i<130; i ...