Problem	catfight
User	hackerman123
Submission Time	2023-02-05 22:35:48
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

catfight.cpp: In function ‘int main()’:
catfight.cpp:24:13: error: ‘front’ was not declared in this scope
24 | front = d.front();
| ^~~~~