Compilare: user.cpp: In function ‘int main()’: user.cpp:80:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i < distances.size(); ++i) { ^ user.cpp:70:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &noVertices, &noEdges); ^ user.cpp:74:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &src, &dest, &distance); ^