View Compilation Error

0_0_28693621_17267.cpp: In function 'int dfs(int, int, int, bool)':
0_0_28693621_17267.cpp:20:25: error: lvalue required as left operand of assignment
     if(!limit && dp[pos]=-1) return dp[pos][sta];
                         ^
0_0_28693621_17267.cpp:20:48: error: invalid types 'int[int]' for array subscript
     if(!limit && dp[pos]=-1) return dp[pos][sta];
                                                ^