230207

# x = int(input())
# y = input().split()
#
# for i in range(x):
#     y[i] = int(y[i])
#
# y.sort()
#
# print(y[0])


# x = input().split()
# y = int(input())
#
# print(x[y-1])


x = int(input())
y = []
result = sum(y)

for i in range(x):
    z = int(input())
    y.append(z)

print(55-result)