foo.cc: In function 'int weekdayOfTheFirstDay(int, int)':
foo.cc:32:1: warning: no return statement in function returning non-void [-Wreturn-type]
   32 | }
      | ^
foo.cc: In function 'int pastDays(int, int, int)':
foo.cc:47:1: warning: no return statement in function returning non-void [-Wreturn-type]
   47 | }
      | ^

[Hydro](https://hydro.ac)提供评测服务