/in/foo.cc: In function 'int main()':
/in/foo.cc:41:67: error: ordered comparison of pointer with integer zero ('int*' and 'int')
   41 |                         if(x[j][1]+1==x[j+1][1]&&x[j][1]>0&&x[j+1]<0)
      |                                                             ~~~~~~^~
/in/foo.cc:52:67: error: ordered comparison of pointer with integer zero ('int*' and 'int')
   52 |                         if(x[j][1]-1==x[j-1][1]&&x[j][1]<0&&x[j+1]>0)
      |                                                             ~~~~~~^~