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这个算法有没有错啊，怎么老是WA

Posted by Manio at 2006-11-01 13:51:56 on Problem 2361

             if( Xsize-Osize==0 ){
                  if( (iswinner(X) && !iswinner(O)) || (iswinner(X) && iswinner(O) ))pinvalid();
                  else pvalid();                
             }else if(Xsize-Osize==1){
                  if( (iswinner(O) && !iswinner(X)) || (iswinner(X) && iswinner(O) ))pinvalid();
                  else pvalid();
             }else pinvalid();

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