cave.cpp: In function 'void exploreCave(int)':
cave.cpp:17:17: error: 'vector' was not declared in this scope
17 | vector<ll> v;
| ^~~~~~
cave.cpp:2:12: error: expected primary-expression before 'int'
2 | #define ll int
| ^~~
cave.cpp:17:24: note: in expansion of macro 'll'
17 | vector<ll> v;
| ^~
cave.cpp:18:30: error: 'n' was not declared in this scope
18 | for(ll j=0;j<n;j++){
| ^
cave.cpp:19:37: error: 'v' was not declared in this scope
19 | if(c[j]==0) v.pb(j);
| ^
cave.cpp:21:23: error: 'v' was not declared in this scope
21 | while(v.size()>1){
| ^
cave.cpp:22:38: error: 'n' was not declared in this scope
22 | for(ll j=0;j<n;j++){
| ^
cave.cpp:2:12: error: expected primary-expression before 'int'
2 | #define ll int
| ^~~
cave.cpp:27:32: note: in expansion of macro 'll'
27 | vector<ll> v1,v2;
| ^~
cave.cpp:30:33: error: 'v1' was not declared in this scope
30 | v1.pb(v[j]);
| ^~
cave.cpp:34:33: error: 'v2' was not declared in this scope
34 | v2.pb(v[j]);
| ^~
cave.cpp:38:44: error: 'v1' was not declared in this scope
38 | if(x==-1 || x>i) v=v1;
| ^~
cave.cpp:39:32: error: 'v2' was not declared in this scope
39 | else v=v2;
| ^~
cave.cpp:41:19: error: 'v' was not declared in this scope
41 | c[v.back()]=1;
| ^