foo.cc: In function 'int get(std::vector<std::pair<int, int> >)':
foo.cc:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for (int i = 0; i < range.size(); i ++ )
      |                  ~~^~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:62:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |    for (int j = 0; j < range.size(); j ++ )
      |                    ~~^~~~~~~~~~~~~~
foo.cc:4:11: warning: unused variable 'second' [-Wunused-variable]
    4 | #define y second
      |           ^~~~~~
foo.cc:58:19: note: in expansion of macro 'y'
   58 |   int x = q[i].x, y = q[i].y, w = q[i].w;
      |                   ^
foo.cc:68:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'LL' {aka 'long long int'} [-Wformat=]
   68 |  printf("%d\n", res);
      |          ~^     ~~~
      |           |     |
      |           int   LL {aka long long int}
      |          %lld
foo.cc:44:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   44 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
foo.cc:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 |   scanf("%d%d", &q[i].x, &q[i].y);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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