zone.cpp: In function 'int dfs(int, int&)': zone.cpp:42: warning: 'auto' will change meaning in C++0x; please remove it zone.cpp:42: error: expected initializer before ':' token zone.cpp:46: error: expected primary-expression before '}' token zone.cpp:46: error: expected ';' before '}' token zone.cpp:46: error: expected primary-expression before '}' token zone.cpp:46: error: expected ')' before '}' token zone.cpp:46: error: expected primary-expression before '}' token zone.cpp:46: error: expected ';' before '}' token zone.cpp:47: warning: no return statement in function returning non-void zone.cpp: In function 'int main()': zone.cpp:97: warning: comparison between signed and unsigned integer expressions zone.cpp:98: warning: 'auto' will change meaning in C++0x; please remove it zone.cpp:98: error: expected initializer before ':' token zone.cpp:103: error: could not convert 'vec[i].std::set<_Key, _Compare, _Alloc>::clear [with _Key = int, _Compare = std::less<int>, _Alloc = std::allocator<int>]()' to 'bool' zone.cpp:104: error: expected ')' before ';' token