Problem	fenwicktree_easy
User	huyleisme
Submission Time	2024-02-08 09:27:59
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

fenwicktree_easy.cpp: In function ‘int main()’:
fenwicktree_easy.cpp:28:4: error: ‘arr’ was not declared in this scope
28 | arr[x] = arr[y];
| ^~~