Compilare: main.cpp: In function 'void duval_lyndon(int)': main.cpp:22:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp:27:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 27 | while(v.size()<n) | ~~~~~~~~^~ main.cpp: In function 'int main()': main.cpp:48:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(i=0;i<S.size();i++) | ~^~~~~~~~~