foo.cc:5:8: error: 'LL' does not name a type
    5 | inline LL dfs(int x,int y,int from)
      |        ^~
foo.cc: In function 'int main()':
foo.cc:24:8: error: 'dfs' was not declared in this scope; did you mean 'ffs'?
   24 |  cout<<dfs(n,m,1)<<ednl;
      |        ^~~
      |        ffs
foo.cc:24:20: error: 'ednl' was not declared in this scope
   24 |  cout<<dfs(n,m,1)<<ednl;
      |                    ^~~~

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Found 20 testcases.
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