/in/foo.cc: In function 'int main()':
/in/foo.cc:13:20: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'double' [-Wformat=]
   13 |         printf("%lld\n", sum);
      |                 ~~~^     ~~~
      |                    |     |
      |                    |     double
      |                    long long int
      |                 %f
/in/foo.cc:7:19: warning: unused variable 'sumn' [-Wunused-variable]
    7 |         long long sumn = 1, summ = 1;
      |                   ^~~~
/in/foo.cc:7:29: warning: unused variable 'summ' [-Wunused-variable]
    7 |         long long sumn = 1, summ = 1;
      |                             ^~~~
/in/foo.cc:9:16: warning: unused variable 'temp' [-Wunused-variable]
    9 |         double temp;
      |                ^~~~