Compilare: main.cpp: In function 'bool bfs()': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0; i < adiacenta[nod].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for (int i = 0; i < adiacenta[2*n+1].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:87:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for (int j = 1; j < adiacenta[i].size(); ++j) { | ~~^~~~~~~~~~~~~~~~~~~~~