Compilare: user.cpp: In function 'void dijkstra(std::vector<node, std::allocator<node> >*, int, int, int, int*, int*)': user.cpp:102: warning: comparison between signed and unsigned integer expressions user.cpp:107: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void sol(FILE*, std::vector<node, std::allocator<node> >*, int*, int*, int*, int, int)': user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp:150: warning: format '%06ld' expects type 'long int', but argument 3 has type 'long long unsigned int' user.cpp:151: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:178: warning: unused variable 'i'