View Compilation Error

0_0_18512817_26946.cpp: In member function 'int F::operator()(long long int)':
0_0_18512817_26946.cpp:141:31: error: no matching function for call to 'Dlx::solve(int [66], int)'
   return -dlx.solve(ans, k + 1);
                               ^
0_0_18512817_26946.cpp:141:31: note: candidate is:
0_0_18512817_26946.cpp:103:6: note: int Dlx::solve(int*)
  int solve(int ans[]) { //return -1 if impossible
      ^
0_0_18512817_26946.cpp:103:6: note:   candidate expects 1 argument, 2 provided