Compilare: main.cpp: In function 'void bfs(int)': main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<muchii[nod].size();i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:30:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&m); ^ main.cpp:42:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&a,&b); ^