Compilare: main.cpp: In function 'void Test()': main.cpp:74:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(i = 0 ; i + 1 < s.size() ; i++) | ~~~~~~^~~~~~~~~~ main.cpp:78:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(j = i + 1 ; j + lg - 1 < s.size() ; j += lg) | ~~~~~~~~~~~^~~~~~~~~~