KMP + DP, O(n ^ 2)

?????abxxxab?????
abab
output: 3
answer: 4

I wrote program on C++ and got WA1. I rewrote program on Pascal and got AC.
I think my error in input string. How do i read lines? My attempts:
1)
     int c;
     n=0;
     while ((c = getchar()) != EOF)
     {
          if(c=='\n') break;
          s[++n]=c;
     }
     m=0;
     while ((c = getchar()) != EOF) t[++m]=(char)c;
2)
void Input()
{
     int c;
     scanf("%c",&c);
     n=0;
     while (c!='\n')
     {
          s[++n]=c;
          scanf("%c",&c);
     }
     m=0;
     while ((c = getchar()) != EOF) t[++m]=(char)c;
}

Probably <string> will help, but i prefer work with index>=1.

Edited by author 22.06.2017 23:44

Edited by author 22.06.2017 23:44

My AC program gives wrong answer on this test:
?????xy?????
xyxy

My answer:
3

Right answer:
4

Edited by author 13.11.2012 12:52

why WA #3, please, give me any test ...

Edited by author 12.11.2012 20:03

I have a problem Crash(access violation)

help me please


Sorry for poor English

In 2 sample:

Arch?????rchibaldIronfist
Archibald

but we can put Archibald from 1st position and from 9th position. Why answer is 1?

Can somebody give hints to solve this task?

Need for some tests :(

Edited by author 24.09.2011 16:05

it was compiled fine in my system... but i dont know why it was showing compilation error when i submit... please help me !!