Compilare: user.cpp: In function ‘void dijkstra(int, int)’: user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int getCost(int, int)’: user.cpp:45: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:62: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int getCost(int, int)’: user.cpp:48: warning: control reaches end of non-void function