Compilare: user.cpp: In function ‘void apm()’: user.cpp:79:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<graf[vfmin].size(); j++) ^ user.cpp: In function ‘void citire()’: user.cpp:43:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &n, &m, &k); ^ user.cpp:46:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d %d %d", &a, &b, &aux.cost); ^