/in/foo.cc: In function 'int main()':
/in/foo.cc:42:38: warning: 'ans2' may be used uninitialized in this function [-Wmaybe-uninitialized]
         printf("%d %d\n", ans1, ans2);
                                      ^
/in/foo.cc:42:38: warning: 'ans1' may be used uninitialized in this function [-Wmaybe-uninitialized]