Problem	combo
User	nminhnguyenle
Submission Time	2026-03-11 13:55:23
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

combo.cpp:7:1: error: ‘button’ does not name a type
7 | button[0]='A';
| ^~~~~~
combo.cpp:8:1: error: ‘button’ does not name a type
8 | button[1]='B';
| ^~~~~~
combo.cpp:9:1: error: ‘button’ does not name a type
9 | button[2]='X';
| ^~~~~~
combo.cpp:10:1: error: ‘button’ does not name a type
10 | button[3]='Y';
| ^~~~~~