Compilare: main.cpp: In function 'int main()': main.cpp:71:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for (i = 1; i < norm[0].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for (i = 1; i < norm[1].size(); i++) | ~~^~~~~~~~~~~~~~~~