View Compilation Error

0_0_35281463_13053.cpp: In function 'long long int dfs(int, int, int, bool)':
0_0_35281463_13053.cpp:14:2: error: 'll' was not declared in this scope
  ll sum=0;
  ^
0_0_35281463_13053.cpp:17:3: error: 'sum' was not declared in this scope
   sum+=dfs(pos-1,i,i==4,limit&&i==digit[pos]);
   ^
0_0_35281463_13053.cpp:19:26: error: 'sum' was not declared in this scope
  if(!limit) dp[pos][sta]=sum;
                          ^
0_0_35281463_13053.cpp:20:9: error: 'sum' was not declared in this scope
  return sum;
         ^