Problem	minstack
User	ThePwo
Submission Time	2023-01-07 17:51:47
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

minstack.cpp: In function ‘void push(int)’:
minstack.cpp:9:10: error: ‘x’ was not declared in this scope
9 | st.push(x);
| ^