Problem	segmenttree2
User	dzuizz
Submission Time	2025-02-18 11:11:57
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

segmenttree2.cpp: In member function ‘void node::upd(long long int, long long int, long long int)’:
segmenttree2.cpp:27:4: error: ‘val’ was not declared in this scope
27 | val += (r-l+1)*k, lazy += k;
| ^~~