View Compilation Error

0_0_27068229_777.cpp: In function 'int main()':
0_0_27068229_777.cpp:40:13: error: too few arguments to function 'void dfs(int, int)'
         dfs();
             ^
0_0_27068229_777.cpp:12:6: note: declared here
 void dfs(int x, int y) {
      ^