Compilare: main.cpp: In function 'void BellmanFord()': main.cpp:33:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int j=0; j<L[k].size(); j++) | ~^~~~~~~~~~~~ main.cpp:40:20: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 40 | if (viz[v]==0) | ^