Compilare: main.cpp: In function 'std::vector<nod> dfs(int, int&)': main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i < graf[val].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:96:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 0; i < v[1].noduri.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:114:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | for (int j = 1; j < v[i].noduri.size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:122:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~