Compilare: main.cpp: In function 'int main()': main.cpp:37:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (int j = 0;j < din[i].size();++j) | ~~^~~~~~~~~~~~~~~ main.cpp:41:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bla>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int k = 0;k < graph[nod].size();++k) | ~~^~~~~~~~~~~~~~~~~~~