Compilare: user.cpp: In function ‘int DFS1(int)’: user.cpp:26:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘void DFS2(int)’: user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++){ ^ user.cpp:48:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[nod].size();j++) ^ user.cpp:37:14: warning: unused variable ‘i’ [-Wunused-variable] int nod1,i; ^ user.cpp: In function ‘int main()’: user.cpp:69:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&T); ^ user.cpp:74:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.cpp:76:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&A,&B,&D); ^