Problem	addition
User	Cy
Submission Time	2026-06-22 15:19:48
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

addition.cpp:2:20: error: expected ‘;’ before ‘:’ token
2 | using namespace std:
| ^
| ;
addition.cpp:2:20: error: expected unqualified-id before ‘:’ token