Problem	nian
User	justin271828
Submission Time	2026-03-09 11:10:26
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

nian.cpp: In function ‘void hld_up(long long int, long long int)’:
nian.cpp:50:11: error: ‘second’ was not declared in this scope
50 | #define s second
| ^~~~~~
nian.cpp:76:7: note: in expansion of macro ‘s’
76 | if (s.find(x) != s.end()) return;
| ^