Problem	railway
User	coin
Submission Time	2025-10-07 16:26:41
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

railway.cpp: In function ‘int main()’:
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';
| ^