Problem	railway
User	weccs
Submission Time	2026-09-26 15:29:54
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

railway.cpp: In function ‘void dfs(long long int, long long int)’:
railway.cpp:15:5: error: invalid types ‘long long int[long long int]’ for array subscript
15 | p[x][0] = p;
| ^
railway.cpp:20:7: error: cannot convert ‘std::pair<long long int, long long int>’ to ‘long long int’
20 | dfs(i,x);
| ^
| |
| std::pair<long long int, long long int>
railway.cpp:14:14: note: initializing argument 1 of ‘void dfs(long long int, long long int)’
14 | void dfs(int x, int p) {
| ^
railway.cpp: In function ‘void findpa(long long int, long long int)’:
railway.cpp:31:9: error: return-statement with a value, in function returning ‘void’ [-fpermissive]
31 | return x;
| ^
railway.cpp: In function ‘long long int lca(long long int, long long int)’:
railway.cpp:36:12: error: void value not ignored as it ought to be
36 | a = findpa(a,depth[a]-de