Compilare: main.cpp: In function 'int main()': main.cpp:38:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (int d = i + 1; d < v.size(); d++) { | ~~^~~~~~~~~~