From: kmitko@gmail.com   
      
   Wayne Andrews twierdzi, że:   
   >   int node, res, num, p1[20], p2[20];   
   >         if(p1[i]==0 || P1[j]==0)   
      
   I don't know what about yours compiler, but in general C code is   
   case-sensitive, P1 is not the same as p1.   
      
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