Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:26:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[nod].size();j++) ^ user.cpp: In function ‘void dfst(int, int)’: user.cpp:34:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<gt[nod].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:53:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<sol[i].size();j++) ^ user.cpp: In function ‘void citire()’: user.cpp:14:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&n,&m); ^ user.cpp:18:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&x,&y); ^