Compilare: main.cpp: In function 'int main()': main.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(i=0;i<N[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp:41:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(i=0;i<N[ora].size();i++){ | ~^~~~~~~~~~~~~~