#переменные j и k
a = []
n = 5
for і in range(n):
    a.append(int(input()))

k = 10001
for j in range(n):
    if (a[j]>=256) and (a[j]%16==12) and (a[j]<k):
        k = a[j]
if k == 10001:
    print(0)
else:
    print(k)