foreach(var answer in Enumerable
    .Range(0, int.Parse(Console.ReadLine()))
    .Select(i => new 
       {
         p = Console.ReadLine().Split(' ').Select(s => int.Parse(s)),
         s = Console.ReadLine().Split(' ').Select(s => int.Parse(s))
       })
    .Select(a => a.s.Count(t => t <= 0) < a.p.Last() ? "YES" : "NO"))
        Console.WriteLine(answer);

C#'s Linq is really made to be lazy :p