/in/foo.cc: In function 'void getans(int, int, int)':
/in/foo.cc:99:9: warning: unused variable 'zuida' [-Wunused-variable]
     int zuida=0,cida=0;
         ^~~~~
/in/foo.cc:99:17: warning: unused variable 'cida' [-Wunused-variable]
     int zuida=0,cida=0;
                 ^~~~