Problem	modulochain
User	Xiaoyang
Submission Time	2023-01-05 20:14:13
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

modulochain.cpp: In function ‘int main()’:
modulochain.cpp:38:11: error: ‘a’ was not declared in this scope
38 | cc=((cc-a[i])%mod+mod)%mod;
| ^