Problem	foodchain
User	yqiiiiiii
Submission Time	2025-07-07 21:01:08
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

foodchain.cpp: In function ‘int main()’:
foodchain.cpp:10:10: error: ‘f’ was not declared in this scope
10 | milks = f%1000000009;
| ^