for this question http://www.codechef.com/problems/IGAME , i am getting runtime error(SIGSEGV) with this solution CodeChef: Practical coding for everyone . but there are many successful submissions in C for this problem which also uses same amount of memory as i did that is 2-d array of around 1000*1000, like this CodeChef: Practical coding for everyone. what is the problem with my solution ?
This seems to me as the problem
while(x<=1000 || y<=1000) // Problem lies here
{
a[x][y]=‘0’;
a[y][x]=‘0’;
x=x+i+1;
y=y+i;
i++;
}
If either of x or y become > 1001 then you’ll access element which has not been allocated as your char array has dimensions 1002 * 1002, it should be “&&” instead of “||”. Hence the Runtime Error.
Regards,
Ouditchya Sinha.
1 Like
can you tell me why i am getting wrong answer with this solution CodeChef: Practical coding for everyone for the above question?
@seekay: I think your logic is wrong. I have printed your array here - LVkXtl - Online C Compiler & Debugging Tool - Ideone.com. Try to think of small test cases, you’ll realise your mistake.
All the Best. 
The link appears to be broken, just try printing your “a” array & cross check for small cases with pen & paper.