Problem	lineup
User	LXYSGP
Submission Time	2026-01-21 09:22:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lineup.cpp: In function ‘int main()’:
lineup.cpp:22:12: error: ‘__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type’ {aka ‘struct std::pair<int, int>’} has no member named ‘ss’
22 | mp[a[l].ss]--;
| ^~