Problem	minstack
User	Lucas
Submission Time	2024-04-14 15:40:59
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

minstack.cpp: In function ‘void pop()’:
minstack.cpp:18:7: error: ‘s2’ was not declared in this scope; did you mean ‘S2’?
18 | if ( s2.size() == 0 ){
| ^~
| S2