Compilare: main.cpp: In function 'int main()': main.cpp:102:42: warning: comparison of integer expressions of different signedness: 'std::vector<EdgeIndex>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 102 | bool possible = cycle.size() - 1 == edges; | ~~~~~~~~~~~~~~~~~^~~~~~~~ main.cpp:107:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<EdgeIndex>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for(int i = 0; i < cycle.size() - 1; ++i) | ~~^~~~~~~~~~~~~~~~~~