Compilare: main.cpp: In function 'int main()': main.cpp:129:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | for(int i = 0;i < portal.size();i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:138:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | for(int i = 0;i < portal.size();i++) { | ~~^~~~~~~~~~~~~~~