Compilare: main.cpp:13:27: warning: integer overflow in expression [-Woverflow] const int inf = (1 << 31) - 1; ~~~~~~~~~~^~~ main.cpp: In function 'void dijkstra()': main.cpp:23:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nc].size (); i++) ~~^~~~~~~~~~~~~~~ main.cpp:18:21: warning: unused variable 't' [-Wunused-variable] int nc, nv, cost, t; ^