Problem	twicetwice
User	cobnet
Submission Time	2026-03-10 12:14:12
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

twicetwice.cpp: In function ‘int main()’:
twicetwice.cpp:14:18: error: ‘a’ was not declared in this scope
14 | while(L < R && a[R] - a[L] >= k){
| ^