Compilare: main.cpp: In function 'int main()': main.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int i = 2; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:74:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int i = 0; i < stk.size(); i++) | ~~^~~~~~~~~~~~