View Compilation Error

0_0_25725071_2815.cpp: In member function 'void Splay::Dfs(int, bool&)':
0_0_25725071_2815.cpp:142:36: error: no matching function for call to 'Splay::Dfs(int&)'
         if(son[x][0]) Dfs(son[x][0]);
                                    ^
0_0_25725071_2815.cpp:142:36: note: candidate is:
0_0_25725071_2815.cpp:139:10: note: void Splay::Dfs(int, bool&)
     void Dfs(int x, bool& __){
          ^
0_0_25725071_2815.cpp:139:10: note:   candidate expects 2 arguments, 1 provided
0_0_25725071_2815.cpp:148:36: error: no matching function for call to 'Splay::Dfs(int&)'
         if(son[x][1]) Dfs(son[x][1]);
                                    ^
0_0_25725071_2815.cpp:148:36: note: candidate is:
0_0_25725071_2815.cpp:139:10: note: void Splay::Dfs(int, bool&)
     void Dfs(int x, bool& __){
          ^
0_0_25725071_2815.cpp:139:10: note:   candidate expects 2 arguments, 1 provided