View Compilation Error

0_0_17364215_28925.cpp: In function 'long long int dfs(int, int, int, int, int)':
0_0_17364215_28925.cpp:13:40: error: invalid initialization of reference of type 'int&' from expression of type 'long long int'
     int &dpAns = dp[pos][state][num][dg];
                                        ^