View Compilation Error

0_0_26244421_24900.cpp:133:15: error: two or more data types in declaration of 'dfs'
 void dfs(int u) {
               ^
0_0_26244421_24900.cpp: In function 'void solve()':
0_0_26244421_24900.cpp:149:7: error: 'dfs' was not declared in this scope
  dfs(0);
       ^
0_0_26244421_24900.cpp:151:40: error: 'Ans' was not declared in this scope
  for(int i=0;i<d[n-1];i++) ans=max(ans,Ans[i]);
                                        ^