foo.cc: In function 'int Find_imin_m(int (*)[100], int, int, int, int)':
foo.cc:70:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
foo.cc: In function 'int Find_imin_n(int (*)[100], int, int, int, int)':
foo.cc:87:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。