/in/foo.cc: In function 'int main()':
/in/foo.cc:94:25: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'double' [-Wformat=]
         printf("%ld",ans);
                         ^
/in/foo.cc:59:9: warning: unused variable 'kase' [-Wunused-variable]
     int kase=0;
         ^~~~