Compilare: main.cpp: In function 'int main()': main.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:74:27: 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 (int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:84:27: 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] 84 | if (t < v.size() && x == v[t]) | ~~^~~~~~~~~~ main.cpp:97:19: 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] 97 | if (t < v.size() && x == v[t]) | ~~^~~~~~~~~~ main.cpp:108:23: 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] 108 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:131:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ok>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 131 | for (int i = 0; i < afis.size(); i++) | ~~^~~~~~~~~~~~~