Problem	foreveralone
User	squishychicken
Submission Time	2025-07-07 10:46:17
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

foreveralone.cpp: In function ‘int main()’:
foreveralone.cpp:17:9: error: ‘class std::unordered_set<long long int>’ has no member named ‘push_back’
17 | s[a].push_back(b);
| ^~~~~~~~~
foreveralone.cpp:18:9: error: ‘class std::unordered_set<long long int>’ has no member named ‘push_back’
18 | s[b].push_back(a);
| ^~~~~~~~~
foreveralone.cpp:21:8: error: ‘N’ was not declared in this scope
21 | cout<<N-s.size;
| ^
foreveralone.cpp:21:12: error: request for member ‘size’ in ‘s’, which is of non-class type ‘std::unordered_set<long long int> [n]’
21 | cout<<N-s.size;
| ^~~~