View Compilation Error

0_0_39260459_7138.cpp:4:1: error: 'define' does not name a type
    4 | define long long ll;
      | ^~~~~~
0_0_39260459_7138.cpp:6:1: error: 'll' does not name a type
    6 | ll ans,n;
      | ^~
0_0_39260459_7138.cpp:8:6: error: variable or field 'dfs' declared void
    8 | void dfs(ll pos,ll pre){
      |      ^~~
0_0_39260459_7138.cpp:8:10: error: 'll' was not declared in this scope
    8 | void dfs(ll pos,ll pre){
      |          ^~
0_0_39260459_7138.cpp:8:17: error: 'll' was not declared in this scope
    8 | void dfs(ll pos,ll pre){
      |                 ^~
0_0_39260459_7138.cpp: In function 'int main()':
0_0_39260459_7138.cpp:31:14: error: 'n' was not declared in this scope
   31 |         cin>>n;
      |              ^
0_0_39260459_7138.cpp:32:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   32 |         ans = inf;
      |         ^~~
      |         abs
0_0_39260459_7138.cpp:33:9: error: 'dfs' was not declared in this scope
   33 |         dfs(1,0);
      |         ^~~