Compilare: main.cpp: In function 'void bfs(int)': main.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Muchii[nod].size();j++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:18:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%ld%d",&n,&m,&Start); ^ main.cpp:23:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^