Compilare: main.cpp: In function 'void pasul2()': main.cpp:67:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (int i = 0; i < a[nod.second].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void pasul3()': main.cpp:88:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~