Compilare: main.cpp: In function 'int BFS(std::vector<int>&)': main.cpp:32:24: 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] 32 | for (int i=0; i<graf_rezidual[x].size(); i++) { | ~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | while (index < lant.size() - 1) { | ~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:78:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | while (index < lant.size() - 1) { | ~~~~~~^~~~~~~~~~~~~~~~~