Problem	pigeonhole
User	Usu
Submission Time	2026-02-04 16:33:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

pigeonhole.cpp: In function ‘int main()’:
pigeonhole.cpp:18:13: error: ‘struct std::_Rb_tree_iterator<std::pair<const long long unsigned int, long long unsigned int> >’ has no member named ‘first’
18 | printf(it.first);
| ^~~~~