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0_0_39676424_25111.cpp: In function 'rational operator+(rational, rational)':
0_0_39676424_25111.cpp:16:40: error: 'yA' was not declared in this scope; did you mean 'y'?
   16 |         int t = __gcd(x.a + y.a, x.b * yA.b);
      |                                        ^~
      |                                        y