Compilare: main.cpp: In function 'int get_cost(const std::string&, const std::string&)': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=1;i<s.length();i++){ | ~^~~~~~~~~~~ main.cpp: In function 'bool is_inside(const std::string&, const std::string&)': main.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int i=1;i<s.length();i++){ | ~^~~~~~~~~~~ main.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i=a.length();i<s.length();i++){ | ~^~~~~~~~~~~ main.cpp:49:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | if(pi[i] == a.length()) return 1; | ~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:117:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(int idx = 1;idx<indici.size();idx++){ | ~~~^~~~~~~~~~~~~~ main.cpp:122:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for(int x = s[i].length() - cost; x< s[i].length(); x++){ | ~^~~~~~~~~~~~~~~