Compilare: main.cpp: In function 'void dijk()': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:17:14: warning: unused variable 'cost' [-Wunused-variable] int nod, cost, i, numr; ^~~~ main.cpp: In function 'int main()': main.cpp:34:21: warning: unused variable 'j' [-Wunused-variable] int n, m, f, i, j, a, b, c; ^