lightningrod.cpp: In function 'int main()':
lightningrod.cpp:29:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::stack<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wformat=]
29 | printf("%d\n", s.size());
| ~^ ~~~~~~~~
| | |
| int std::stack<std::pair<int, int> >::size_type {aka long unsigned int}
| %ld
lightningrod.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
17 | scanf("%d\n", &n);
| ~~~~~^~~~~~~~~~~~