Compilare: main.cpp: In function 'int main()': main.cpp:67:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (i=1; i<vx.size (); i++) | ~^~~~~~~~~~~ main.cpp:73:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (i=1; i<vy.size (); i++) | ~^~~~~~~~~~~