View Compilation Error

0_0_37910286_25904.cpp: In function 'void solve()':
0_0_37910286_25904.cpp:111:13: error: too many arguments to function 'void dfs(int)'
     dfs(1, 0);
             ^
0_0_37910286_25904.cpp:23:6: note: declared here
 void dfs(int x)
      ^