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    • P3453【HN Training 2015 Round9】HOMEWORK
    Limits : Time Limit : - MS   Memory Limit : 265536 KB
    Description

    Input Format

    Output Format

    OutputFormat

    Sample Input

    3
    0 1 0
    0 0 1
    0 0 0
    1 1 1
    1 0 1
    1 1 0

    Sample Output

    0