Compilare: user.cpp: In function ‘void dfs(int, int, int, int, int)’: user.cpp:52:27: 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:98:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ap[x].size();i++) ^ user.cpp:71:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&T); ^ user.cpp:75:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d%d%d",&n,&d,&c,&v); ^ user.cpp:81:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&x,&y); ^