Compilare: main.cpp: In function 'bool cuplaj(int)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < v[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~ main.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int i = 0; i < v[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~