Problem	railway
User	coin
Submission Time	2025-10-07 16:25:10
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

railway.cpp: In function ‘long long int lca(long long int, long long int)’:
railway.cpp:40:9: error: ‘p’ was not declared in this scope
40 | return p[a][0];
| ^
railway.cpp: In function ‘int main()’:
railway.cpp:57:10: error: too few arguments to function ‘void dfs(long long int, long long int, long long int, long long int)’
57 | dfs(1, 0);
| ^
railway.cpp:12:6: note: declared here
12 | void dfs(int u, int p, int d, int l){
| ^~~
railway.cpp:63:41: error: invalid types ‘long long int [100005][long long int(long long int, long long int)]’ for array subscript
63 | cout << dist[a] + dist[b] - 2*dist[lca] << '\n';
| ^