View Compilation Error

0_0_39548866_17035.cpp: In function 'void dfs1(long long int, long long int)':
0_0_39548866_17035.cpp:67:21: error: redeclaration of 'long long int len'
   67 |                 int len=leaf.len;ull w=leaf.w;
      |                     ^~~
0_0_39548866_17035.cpp:66:19: note: 'long long int len' previously declared here
   66 |         for(auto [len,w]:v){
      |                   ^~~
0_0_39548866_17035.cpp:67:25: error: 'leaf' was not declared in this scope
   67 |                 int len=leaf.len;ull w=leaf.w;
      |                         ^~~~
0_0_39548866_17035.cpp:67:38: error: redeclaration of 'long long unsigned int w'
   67 |                 int len=leaf.len;ull w=leaf.w;
      |                                      ^
0_0_39548866_17035.cpp:66:23: note: 'long long unsigned int w' previously declared here
   66 |         for(auto [len,w]:v){
      |                       ^