Compilare: main.cpp: In function 'void bellmanford()': main.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<graf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(j = 0; j < graphs[nod].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:96:9: warning: unused variable 'a' [-Wunused-variable] 96 | int a, b, c, i, j; | ^ main.cpp:96:12: warning: unused variable 'b' [-Wunused-variable] 96 | int a, b, c, i, j; | ^ main.cpp:96:15: warning: unused variable 'c' [-Wunused-variable] 96 | int a, b, c, i, j; | ^