Problem	railway
User	Pan
Submission Time	2024-04-09 15:56:30
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

railway.cpp: In function ‘ll lca(ll, ll)’:
railway.cpp:84:9: error: ‘lg’ was not declared in this scope; did you mean ‘l’?
84 | ll i = lg(r-l+1);
| ^~
| l