Compilare: main.cpp: In function 'int main()': main.cpp:77:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int i = 0 ; i < singure.size() ; ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp:89:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int i = prev ; i < singure.size() - 1 ; ++ i) { | ~~^~~~~~~~~~~~~~~~~~~~