import random
k=int(input("k= "))
l= input("a= ")
l=l.split(" ")
for i in l:
    i=int(i)
print(l)

def quickselect(l, k, pivot_fn=random.choice):

    pivot = pivot_fn(l)

    lows = [el for el in l if el < pivot]
    highs = [el for el in l if el > pivot]
    pivots = [el for el in l if el == pivot]

    if k < len(lows):
        return quickselect(lows, k, pivot_fn)
    elif k < len(lows) + len(pivots):
        return pivots[0]
    else:
        return quickselect(highs, k - len(lows) - len(pivots), pivot_fn)

def pivot_mediana(a):
    if len(a)<=5:
        return sorted(a)[len(a)//2]
    subliste=[sorted (a[i:i+5])for i in range(0,len(a),5)]
    mediane=[sl[len(sl)//2] for sl in subliste]
    return pivot_mediana(mediane)
r=quickselect(l,k,pivot_mediana)
print(r)