Compilare: main.cpp: In function 'void dfs(int, std::vector<std::vector<int> >&, int (*)[100], std::vector<nogcd>&, int&)': main.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i = 0; i < v[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nogcd>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 0; i < muchii.size(); i++) | ~~^~~~~~~~~~~~~~~