View Compilation Error

0_0_21991375_29483.cpp: In function 'long long int solve(long long int)':
0_0_21991375_29483.cpp:39:20: error: too few arguments to function 'long long int dfs(int, int, int, int)'
  return dfs(cnt,0,1);
                    ^
0_0_21991375_29483.cpp:19:4: note: declared here
 ll dfs (int pos, int pre, int status, int limit) {
    ^
0_0_21991375_29483.cpp: In function 'int main()':
0_0_21991375_29483.cpp:45:9: error: 'T' was not declared in this scope
  while (T--) {
         ^