from random import randint
a = [randint(1, 100) for i in range(100)]
n = len(a)
Max = 0
for i in range(n):
    for j in range(i + 11, n):
        if (a[j] + a[i]) % 567 == 0 and (a[i] + a[j]) % 2 == 0:
            Max = max(Max, a[j] + a[i])
print(Max)