foo.cc: In function 'void dfs1(int, int, int)':
foo.cc:12:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i = 0; i < e[x].size(); i++){
      |                 ~~^~~~~~~~~~~~~
foo.cc: In function 'void dfs2(int, int, int)':
foo.cc:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i = 0; i < e[x].size(); i++){
      |                 ~~^~~~~~~~~~~~~

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Found 10 testcases.
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