Compilare: user.cpp: In function ‘void Dijkstra()’: user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < G[ind].Adj.size(); i++){ ^ user.cpp:22:9: warning: unused variable ‘root’ [-Wunused-variable] int i, root, dist, ind, next; ^ user.cpp: In function ‘int main()’: user.cpp:46:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:48:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &w); ^