Problem	leftright
User	yc
Submission Time	2025-05-28 19:32:42
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

leftright.cpp: In function ‘int main()’:
leftright.cpp:27:22: error: ‘d’ was not declared in this scope
27 | if (c==N.begin())d = N.end();
| ^
leftright.cpp:28:22: error: ‘d’ was not declared in this scope
28 | else auto d = c; d--;
| ^