Problem	firstabc
User	blob
Submission Time	2023-12-06 11:57:20
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

firstabc.cpp: In function ‘int main()’:
firstabc.cpp:12:30: error: ‘ch’ was not declared in this scope
12 | distinctChars.insert(ch);
| ^~