Compilare: main.cpp: In function 'bool bellman(int)': main.cpp:22:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0 ; i < v[nod].size();i++){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:73:29: warning: 'res' may be used uninitialized [-Wmaybe-uninitialized] 73 | cout<<res/100<<"."<<res%100; | ^~~ main.cpp:61:9: note: 'res' was declared here 61 | int res; | ^~~