Problem	railway
User	YSH2020
Submission Time	2025-10-07 16:21:19
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

railway.cpp: In function ‘void dfs(int, int)’:
railway.cpp:16:8: error: cannot convert ‘std::pair<int, int>’ to ‘int’
16 | dfs(i,n);
| ^
| |
| std::pair<int, int>
railway.cpp:10:14: note: initializing argument 1 of ‘void dfs(int, int)’
10 | void dfs(int n, int p) {
| ~~~~^