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Facing problem to diagnose one of my submission. Round 639 division 2 problem D.
Автор ABIR, история, 5 лет назад, По-английски

Please help me to understand that why my code gives wrong answer in test case 4? where in ideone or codeblocks gives right answer. ideone : https://ideone.com/1YmrBg my Submission: 79230302

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You aren't initializing row and col in main. So ideone and codeblocks probably set everything to false for you, but CodeForces doesn't.

I suggest making row and col global, since you need to use them in another function anyway. This should zero-initialize all values in the array.

Also, you may face RE or undefined behavior from index out of bounds in your northpole function.

while(s[i][p]!='#' and p<m)p++;
while(s[i][q]!='#' and q>=0)q--;

Your bounds check comes after using p or q as an index in the string.

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