/in/foo.cc: In function 'int main()':
/in/foo.cc:39:12: warning: unused variable 'n' [-Wunused-variable]
  long long n,s,c;
            ^
/in/foo.cc:39:14: warning: unused variable 's' [-Wunused-variable]
  long long n,s,c;
              ^
/in/foo.cc:39:16: warning: unused variable 'c' [-Wunused-variable]
  long long n,s,c;
                ^