Problem	ccs
User	SuspiciousAmogus
Submission Time	2024-06-13 16:10:10
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ccs.cpp: In function ‘int main()’:
ccs.cpp:36:7: error: no ‘operator--(int)’ declared for postfix ‘--’ [-fpermissive]
36 | itr--;
| ~~~^~
ccs.cpp:43:31: error: no ‘operator--(int)’ declared for postfix ‘--’ [-fpermissive]
43 | if (itr != st.begin()) itr--;
| ~~~^~