Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long j=0; j<Muchii[nodCurent].size(); j++) ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:40:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ main.cpp:44:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&m); ^ main.cpp:48:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^