Compilare: main.cpp: In function 'void Solution()': main.cpp:149:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 149 | for (; i < sol.size() ; ++ i) | ~~^~~~~~~~~~~~ main.cpp:152:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 152 | while (i < sol.size() && sol[i].x == sol[i - 1].x) | ~~^~~~~~~~~~~~