Compilare: main.cpp: In function 'void dijkstra(int, int)': main.cpp:62:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[nod].size(); j ++) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:103:11: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] x = tata[1][x]; ~~^~~~~~~~~~~~ main.cpp:111:16: warning: 'nod' may be used uninitialized in this function [-Wmaybe-uninitialized] out << a <<"\n"; ^~~~