"""
[25305: 커트라인](https://www.acmicpc.net/problem/25305)
Tier: Bronze 2
Category: 구현
"""
def solution():
n, k = map(int, input().split())
scores = sorted([*map(int, input().split())], reverse=True)
return scores[k-1]
if __name__ == '__main__':
print(solution())