View Compilation Error

0_0_39843296_31634.cpp: In function 'void dfs(int)':
0_0_39843296_31634.cpp:49:1: error: a function-definition is not allowed here before '{' token
   49 | {
      | ^
0_0_39843296_31634.cpp:67:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
   67 |     return 0;
      |            ^