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View Compilation Error

0_0_32648065_20130.cpp: In function 'void Union(int, int)':
0_0_32648065_20130.cpp:15:2: error: 'A' was not declared in this scope
  A=findFather(a);
  ^
0_0_32648065_20130.cpp:16:2: error: 'B' was not declared in this scope
  B=findFather(b);
  ^


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