py

n,k=map(int,input().split())
L=list(map(int,input().split()))#[1, 3, 3, 7, 2, 5, 1, 2, 4, 6]
L=list(set(L))
try:
    for i in range(k-1):
        L.remove(min(L))
    print(min(L))
except ValueError:
    print('NO RESULT')