Compilare: main.cpp: In function 'int main()': main.cpp:52:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int i = 1; i <= norml.size(); ++i) | ~~^~~~~~~~~~~~~~~ main.cpp:53:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int j = 1; j <= normc.size(); ++j) | ~~^~~~~~~~~~~~~~~