Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:46:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < A[x].size(); i++ ) { ^ user.cpp: In function ‘bool dijkstra2(int)’: user.cpp:86:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < A[x].size(); i++ ) { ^ user.cpp: In function ‘int main()’: user.cpp:139:36: warning: ‘sol_k’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n", sol_d, sol_k); ^