Compilare: main.cpp: In function 'int main()': main.cpp:83:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) { ~^~~~~~~~~~~~~~ main.cpp:35:48: warning: unused variable 'cost' [-Wunused-variable] int t, n, m, x, y, co, p, nod, newn, i, j, cost, min, nr1, nr2, nr3; ^~~~ main.cpp:35:54: warning: unused variable 'min' [-Wunused-variable] int t, n, m, x, y, co, p, nod, newn, i, j, cost, min, nr1, nr2, nr3; ^~~