Compilare: main.cpp: In function 'void biconexe(int, int)': main.cpp:69:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[varf].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:36:30: 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:46:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^