Compilare: main.cpp: In function 'long long int dfs(int)': main.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:58:32: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long long int' [-Wformat=] fprintf(fout,"%d %d",node,MIN); ^ main.cpp:43:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&n); ^ main.cpp:45:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^