foo.cc: In function 'int main()':
foo.cc:17:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define                          P                             (                                         
                                                                ^
foo.cc:52:14: note: in expansion of macro 'P'
            M P N E R B E                                                             R C Q L
              ^
foo.cc:17:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define                          P                             (                                         
                                                                ^
foo.cc:54:16: note: in expansion of macro 'P'
              M P O E R H QVQ       X QMQ E K QVQ  X QMQ Q L JJ P HH Q QAQ   M P N E R I E R
                ^
foo.cc:17:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define                          P                             (                                         
                                                                ^
foo.cc:54:79: note: in expansion of macro 'P'
              M P O E R H QVQ       X QMQ E K QVQ  X QMQ Q L JJ P HH Q QAQ   M P N E R I E R
                                                                               ^

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