citymapping.cpp:3:1: error: 'll' does not name a type
3 | ll get(int a, int b) {
| ^~
citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:7:2: error: 'vector' was not declared in this scope
7 | vector <int> dist[n+5];
| ^~~~~~
citymapping.cpp:7:10: error: expected primary-expression before 'int'
7 | vector <int> dist[n+5];
| ^~~
citymapping.cpp:10:11: error: 'get' was not declared in this scope
10 | int x = get(1, i);
| ^~~
citymapping.cpp:15:3: error: 'dist' was not declared in this scope
15 | dist[x].pb(i);
| ^~~~
citymapping.cpp:18:7: error: 'dist' was not declared in this scope
18 | if (dist[i].size() == 0 || dist[i+1].size() == 0) continue;
| ^~~~
citymapping.cpp:19:19: error: 'dist' was not declared in this scope
19 | for (auto& el : dist[i])
| ^~~~
citymapping.cpp:21:12: error: 'get' was not declared in this scope
21 | int x = get(el, el1);
| ^~~