Problem	airplane2
User	Username101
Submission Time	2026-02-22 01:16:06
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

airplane2.cpp: In function ‘int main()’:
airplane2.cpp:23:19: error: lambda-expression in template-argument only available with ‘-std=c++2a’ or ‘-std=gnu++2a’
23 | unordered_map<[int, int]>diff;
| ^
airplane2.cpp:23:25: error: template argument 1 is invalid
23 | unordered_map<[int, int]>diff;
| ^~~
airplane2.cpp:23:25: error: template argument 2 is invalid
airplane2.cpp:23:25: error: template argument 3 is invalid
airplane2.cpp:23:25: error: template argument 4 is invalid
airplane2.cpp:23:25: error: template argument 5 is invalid
airplane2.cpp:23:28: error: expected unqualified-id before ‘]’ token
23 | unordered_map<[int, int]>diff;
| ^
airplane2.cpp:24:2: error: ‘diff’ was not declared in this scope
24 | diff.reserve(nc + nr);
| ^~~~