Compilare: main.cpp: In function 'int main()': main.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i = 0; i < v.size() - 1; i+=2) | ~~^~~~~~~~~~~~~~ main.cpp:43:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int j = 1; j < v.size() - 1; j+=2) | ~~^~~~~~~~~~~~~~