/in/foo.cc: In function 'int main()':
/in/foo.cc:13:12: warning: unused variable 's' [-Wunused-variable]
  long long s=0,m=1;
            ^
/in/foo.cc:13:16: warning: unused variable 'm' [-Wunused-variable]
  long long s=0,m=1;
                ^