Computer Programming Contest Preparation

ToolBox - Source for: 5/507/a.in



/home/toolbox/public_html/solutions/5/507/a.in 
    1 3
    2 3
    3 -1
    4 6
    5 10
    6 4
    7 -5
    8 4
    9 -3
   10 4
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   12 -4
   13 4
   14 -5
   15 4
   16 -2
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   18 -4
   19