Compilare: main.cpp: In function 'void Solution()': main.cpp:149:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 149 | while (i < sol.size()) | ~~^~~~~~~~~~~~ main.cpp:153:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 153 | for (i = i + 1 ; i < sol.size() && sol[i].x == sol[i - 1].x ; ++ i) | ~~^~~~~~~~~~~~