Compilare: user.cpp: In function ‘int myfind(int)’: user.cpp:12:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<G[nod].size()&&pereche[G[nod][i]]>0) ^ user.cpp:14:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==G[nod].size()){ ^ user.cpp:16:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<G[nod].size()){ ^ user.cpp: In function ‘int main()’: user.cpp:38:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&N,&M,&E); ^ user.cpp:40:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&x,&y); ^