Compilare: main.cpp: In function 'bool e_convex(std::vector<punct>&)': main.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'unsigned int'} [-Wsign-compare] 43 | for(int i = 2; i < v.size(); i++){ | ~~^~~~~~~~~~ main.cpp: In function 'bool min(std::string&, std::string&)': main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 50 | for(int i = 0; i < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:100:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'unsigned int'} [-Wsign-compare] 100 | for(int k = 0; k + 1 < st.size(); k++){ | ~~~~~~^~~~~~~~~~~ main.cpp:106:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'unsigned int'} [-Wsign-compare] 106 | for(int k = 0; k + 1 < dr.size(); k++){ | ~~~~~~^~~~~~~~~~~