Compilare: main.cpp: In function 'int main()': main.cpp:21:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | while (i < A.length()) { | ~~^~~~~~~~~~~~ main.cpp:45:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (i=0, j=0;i<B.length();) | ~^~~~~~~~~~~ main.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | if (j==A.length()) count++, rs.push_back(i-j), j=vec[j-1]; | ~^~~~~~~~~~~~ main.cpp:58:22: warning: 'count' may be used uninitialized in this function [-Wmaybe-uninitialized] 58 | fout << count << "\n"; | ^~~~