View Compilation Error

0_0_37830363_30779.cpp:14:7: error: 'll' does not name a type
 const ll oo = 1e18;
       ^
0_0_37830363_30779.cpp: In function 'void dfs(int, int)':
0_0_37830363_30779.cpp:34:27: error: 'oo' was not declared in this scope
     dp[u][0] = dp[u][1] = oo;
                           ^