Problem	swords
User	bachnguyen123
Submission Time	2025-11-23 00:19:07
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

swords.cpp: In function ‘int main()’:
swords.cpp:21:58: error: request for member ‘begin’ in ‘e2’, which is of non-class type ‘int’
21 | int e2 = lower_bound(c.begin()+e1, c.end(), b[i]) - e2.begin();
| ^~~~~