Compilare: main.cpp: In function 'int main()': main.cpp:114:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | for(int i = 1; i<vi.size(); i++) | ~^~~~~~~~~~ main.cpp:121:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 121 | for(int i = 1; i<vj.size(); i++) | ~^~~~~~~~~~