arbsum.cpp: In function 'int comp(int, int)': arbsum.cpp:17: warning: comparison between signed and unsigned integer expressions arbsum.cpp:18: error: cannot convert 'std::vector<int, std::allocator<int> >' to 'int' for argument '1' to 'int comp(int, int)' arbsum.cpp:19: error: cannot convert 'std::vector<int, std::allocator<int> >' to 'int' for argument '1' to 'int comp(int, int)' arbsum.cpp:19: error: cannot convert 'std::vector<int, std::allocator<int> >' to 'int' for argument '1' to 'int comp(int, int)'