Problem	subgraphs
User	LYM2025
Submission Time	2026-08-15 20:59:46
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

subgraphs.cpp: In function ‘int main()’:
subgraphs.cpp:6:2: error: ‘cin_tie’ was not declared in this scope
6 | cin_tie(nullptr);
| ^~~~~~~