NandK = input("")
s1 = input("")
a = s1.split(" ")
k1 = NandK.split(" ")
k = int(k1[1])

b = list(set(a))
b.sort()

if k-1 >= 0 and k-1 < len(b):
    print(b[k-1])
else:
    print("No Result")

样例过了，结果显示runtime error还有wrong answer