Compilare: main.cpp: In function 'bool bellmanford(long long int)': main.cpp:31:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(i=0;i<v[nod].size();i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:45:20: warning: unused variable 'nod' [-Wunused-variable] 45 | int a,b,cost,i,nod,st,dr,mij,rasp,vf; | ^~~