foo.cc: In function 'int main()':
foo.cc:23:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   23 |   printf("%d\n", ans);
      |           ~^     ~~~
      |            |     |
      |            int   long long int
      |           %lld
foo.cc:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |  scanf("%d", &q);
      |  ~~~~~^~~~~~~~~~
foo.cc:17:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |   scanf("%d%d", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~

Found 20 testcases.