combcuv.cpp: In function `int test(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)': combcuv.cpp:39: warning: comparison between signed and unsigned integer expressions combcuv.cpp:44: warning: comparison between signed and unsigned integer expressions combcuv.cpp:49: warning: comparison between signed and unsigned integer expressions combcuv.cpp:50: warning: comparison between signed and unsigned integer expressions combcuv.cpp: In function `bool testSolution(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)': combcuv.cpp:80: warning: comparison between signed and unsigned integer expressions combcuv.cpp:87: warning: comparison between signed and unsigned integer expressions combcuv.cpp: In function `int main()': combcuv.cpp:136: warning: comparison between signed and unsigned integer expressions combcuv.cpp:139: warning: comparison between signed and unsigned integer expressions