/in/foo.cc: In function 'int main()':
/in/foo.cc:6:15: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d",&a);
               ^
/in/foo.cc:5:16: warning: variable 'd' set but not used [-Wunused-but-set-variable]
  long long a,b,d;
                ^