Compilare: user.cpp: In function ‘void bellmanford()’: user.cpp:59:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<L[vf].size(); ++i) ^ user.cpp: In function ‘void citire()’: user.cpp:34:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d\n", &n, &m); ^ user.cpp:37:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d\n", &a, &b, &aux.c); ^