View Compilation Error

0_0_22295954_6809.cpp:8:7: error: 'll' does not name a type
 const ll INF = 1e18+9;
       ^
0_0_22295954_6809.cpp: In function 'long long int zhuliu(int, int, int)':
0_0_22295954_6809.cpp:24:21: error: 'INF' was not declared in this scope
             in[i] = INF;
                     ^
0_0_22295954_6809.cpp:32:38: error: 'INF' was not declared in this scope
             if(i != root && in[i] == INF)
                                      ^