Problem	stonearranging2
User	sin1145141919810tdt
Submission Time	2026-03-11 16:17:59
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

stonearranging2.cpp: In function ‘int main()’:
stonearranging2.cpp:23:16: error: ‘class std::unordered_map<unsigned int, std::vector<std::pair<unsigned int, unsigned int> > >’ has no member named ‘contains’
23 | if(!mp.contains(a[i]) || mp[a[i]].empty())
| ^~~~~~~~