Compilare: user.cpp: In function ‘bool dijkstra(int)’: user.cpp:44:40: 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:81:9: warning: variable ‘left’ set but not used [-Wunused-but-set-variable] int left, right, sol_d, sol_k; ^ user.cpp:81:15: warning: variable ‘right’ set but not used [-Wunused-but-set-variable] int left, right, sol_d, sol_k; ^ user.cpp:107:36: warning: ‘sol_k’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n", sol_d, sol_k); ^