Compilare: user.cpp: In function ‘void DFS1(int)’: user.cpp:14:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘void DFS2(int, int)’: user.cpp:23:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:32:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&m); ^ user.cpp:34:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&x,&y); ^ user.cpp:41:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&Q[i].nod,&Q[i].c); ^