View Compilation Error

0_0_39598689_29503.cpp: In function 'void solve()':
0_0_39598689_29503.cpp:15:46: error: 'dfs' was not declared in this scope
   15 |     std::cout << "Case " << t << ": " << dfs(dfs, 0.02) << '\n';
      |                                              ^~~
0_0_39598689_29503.cpp:15:42: error: 'dfs' was not declared in this scope
   15 |     std::cout << "Case " << t << ": " << dfs(dfs, 0.02) << '\n';
      |                                          ^~~