Compilare: main.cpp: In function 'int main()': main.cpp:43:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 43 | if (euler.size() != m + 1) out << -1; | ~~~~~~~~~~~~~^~~~~~~~ main.cpp:45:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i = 0; i < euler.size() - 1; i++) | ~~^~~~~~~~~~~~~~~~~~