View Compilation Error

0_0_27706598_13480.cpp:4:1: error: 'LL' does not name a type
 LL dp[20][2];
 ^
0_0_27706598_13480.cpp: In function 'LL dfs(int, bool, bool)':
0_0_27706598_13480.cpp:9:14: error: 'dp' was not declared in this scope
  if (!limit&&dp[step][if4]) return dp[step][if4];
              ^
0_0_27706598_13480.cpp:18:3: error: 'dp' was not declared in this scope
   dp[step][if4] = cnt;
   ^