count = int(input(""))
numbers = []
result_1 = []
max_index = 0
for i in range(count):
    numbers.append(int(input("")))
for i in range(len(numbers)):
    for j in range(len(numbers)):
        if i == j:
            break
        if (numbers[i] - numbers[j])%80 == 0:
            result_1.append([numbers[i], numbers[j]])
        if (numbers[j] - numbers[i])%80 == 0:
            result_1.append([numbers[i], numbers[j]]);
for i in range(len(result_1)):
    if result_1[max_index][0] + result_1[max_index][1] < (result_1[i][0] + result_1[i][1]):
       max_index = i
if len(result_1) == 0:
       print("00")
else:
       print(result_1[max_index])