Compilare: main.cpp: In function 'int main()': main.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int i=1;i<a_norm.size();i++) | ~^~~~~~~~~~~~~~ main.cpp:78:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int i=1;i<b_norm.size();i++) | ~^~~~~~~~~~~~~~