/in/foo.cc: In function 'int main()':
/in/foo.cc:18:21: error: 'Y' was not declared in this scope
   if(qimo>85&&xibu==Y)
                     ^
/in/foo.cc:20:23: error: 'Y' was not declared in this scope
   if(banji>80&&ganbu==Y)
                       ^