Compilare: main.cpp: In function 'void get_articulation(int, int, int)': main.cpp:20:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[node].size();i++){ ~^~~~~~~~~~~~~~~ main.cpp:19:8: warning: variable 'is_art' set but not used [-Wunused-but-set-variable] bool is_art=false; ^~~~~~ main.cpp: In function 'int main()': main.cpp:63:10: warning: statement has no effect [-Wunused-value] for(m;m>0;m--){ ^ main.cpp:62:29: 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:64:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&i,&j); ^