Can someone tell me why my python code is wrong?

help
1

question:LCOLLIS Problem - CodeChef
my code:CodeChef: Practical coding for everyone

2

Hey, so you’ve counted no. of 1s in a row. While you should do this for column as a boy’s choice (0 or 1) for each girl is described in a row. See my solution.

3

thanks for replying but can you tell me some example for which my code gives the wrong output

4

Try this:
1000
0100
0010
0010

The correct output should be 1 but your code gives 0.

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