Compilare: main.cpp: In function 'int BFS()': main.cpp:33:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<long long int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int i=0; i<graf_rezidual[x].size(); i++) { | ~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:100:9: warning: unused variable 'cnt' [-Wunused-variable] 100 | int cnt = 0; | ^~~