Compilare: main.cpp: In function 'void solve()': main.cpp:107:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for(int j = 1;j<poly.size();j++) | ~^~~~~~~~~~~~ main.cpp:135:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 135 | for(int i = 0;i+1<poly.size();i++) | ~~~^~~~~~~~~~~~