foo.cc: In function 'long long int dfs(int, int, int, std::vector<int>&)':
foo.cc:19:49: error: too few arguments to function 'long long int dfs(int, int, int, std::vector<int>&)'
   19 |  return vi[minI] - h + dfs(l, minI - 1, vi[minI]) + dfs(minI + 1, r, vi[minI]);
      |                                                 ^
foo.cc:6:11: note: declared here
    6 | long long dfs(int l, int r, int h, vector<int>& vi) {
      |           ^~~
foo.cc:19:78: error: too few arguments to function 'long long int dfs(int, int, int, std::vector<int>&)'
   19 |  return vi[minI] - h + dfs(l, minI - 1, vi[minI]) + dfs(minI + 1, r, vi[minI]);
      |                                                                              ^
foo.cc:6:11: note: declared here
    6 | long long dfs(int l, int r, int h, vector<int>& vi) {
      |           ^~~

[Hydro](https://hydro.ac)提供评测服务