Problem	drones
User	Usu
Submission Time	2026-04-17 14:58:34
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

drones.cpp: In function ‘int main()’:
drones.cpp:20:4: error: ‘adjr’ was not declared in this scope; did you mean ‘adj’?
20 | adjr[last].insert(b);
| ^~~~
| adj
drones.cpp:26:4: error: ‘adjr’ was not declared in this scope; did you mean ‘adj’?
26 | adjr[first].insert(last);
| ^~~~
| adj