/in/foo.cc: In function 'void solve()':
/in/foo.cc:11:16: error: missing template arguments before 'memo'
   11 |         vector memo (m, vector<int>(m + 1, -1));
      |                ^~~~
/in/foo.cc:12:24: error: expected identifier before 'this'
   12 |         auto dfs = [&](this auto&& dfs, int i, int cnt1, bool is_limit) -> int {
      |                        ^~~~
/in/foo.cc:12:24: error: expected ',' or '...' before 'this'
/in/foo.cc: In lambda function:
/in/foo.cc:13:17: error: 'i' was not declared in this scope
   13 |             if (i == m) {return cnt1;}
      |                 ^
/in/foo.cc:13:33: error: 'cnt1' was not declared in this scope
   13 |             if (i == m) {return cnt1;}
      |                                 ^~~~
/in/foo.cc:14:18: error: 'is_limit' was not declared in this scope
   14 |             if (!is_limit && memo[i][cnt1] >= 0) {return memo[i][cnt1];}
      |                  ^~~~~~~~
/in/foo.cc:14:30: error: 'memo' was not declared in this scope
   14 |             if (!is_limit && memo[i][cnt1] >= 0) {return memo[i][cnt1];}
      |                              ^~~~
/in/foo.cc:14:35: error: 'i' was not declared in this scope
   14 |             if (!is_limit && memo[i][cnt1] >= 0) {return memo[i][cnt1];}
      |                                   ^
/in/foo.cc:14:38: error: 'cnt1' was not declared in this scope
   14 |             if (!is_limit && memo[i][cnt1] >= 0) {return memo[i][cnt1];}
      |                                      ^~~~
/in/foo.cc:16:22: error: 'is_limit' was not declared in this scope
   16 |             int up = is_limit ? s[i] - '0' : 9;
      |                      ^~~~~~~~
/in/foo.cc:16:35: error: 'i' was not declared in this scope
   16 |             int up = is_limit ? s[i] - '0' : 9;
      |                                   ^
/in/foo.cc:18:24: error: use of 'dfs' before deduction of 'auto'
   18 |                 res += dfs(memo, i + 1, cnt1 + (d == x), is_limit && d == up);
      |                        ^~~
/in/foo.cc:18:28: error: 'memo' was not declared in this scope
   18 |                 res += dfs(memo, i + 1, cnt1 + (d == x), is_limit && d == up);
      |                            ^~~~
/in/foo.cc:18:41: error: 'cnt1' was not declared in this scope
   18 |                 res += dfs(memo, i + 1, cnt1 + (d == x), is_limit && d == up);
      |                                         ^~~~
/in/foo.cc:20:29: error: 'memo' was not declared in this scope
   20 |             if (!is_limit) {memo[i][cnt1] = res;}
      |                             ^~~~
/in/foo.cc:20:37: error: 'cnt1' was not declared in this scope
   20 |             if (!is_limit) {memo[i][cnt1] = res;}
      |                                     ^~~~
/in/foo.cc: In function 'void solve()':
/in/foo.cc:22:20: error: no match for call to '(solve()::<lambda(int)>) (int, int, bool)'
   22 |         cout << dfs(0, 0, true);
      |                 ~~~^~~~~~~~~~~~
/in/foo.cc:12:20: note: candidate: 'solve()::<lambda(int)>'
   12 |         auto dfs = [&](this auto&& dfs, int i, int cnt1, bool is_limit) -> int {
      |                    ^
/in/foo.cc:12:20: note:   candidate expects 1 argument, 3 provided
/in/foo.cc: In function 'int main()':
/in/foo.cc:26:5: error: 'slove' was not declared in this scope; did you mean 'solve'?
   26 |     slove();
      |     ^~~~~
      |     solve