/in/foo.cc: In function 'int main()':
/in/foo.cc:13:53: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[1005]' [-Wformat=]
  for(int i=1;i<=n;++i)scanf("%d%s",&a[i].num,&a[i].s);
                                                     ^