Problem	lightningrod
User	hwy
Submission Time	2023-06-08 17:46:25
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lightningrod.cpp: In function ‘int main()’:
lightningrod.cpp:19:22: error: ‘S’ was not declared in this scope
19 | int nX = S.top();
| ^