Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:13:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nods].size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:24:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in,"%d%d%d",&n,&m,&b); ^ user.cpp:26:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in,"%d%d",&nod1,&nod2); ^ user.cpp:30:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nod1); ^