n = int(input())
a = [0.0, 0.0, 0.0]
for i in range(n):
    data = input().split()
    a[0] = a[0] + int(data[1])
    a[1] = a[1] + int(data[2])
    a[2] = a[2] + int(data[3])
a[0] = a[0] / n
a[1] = a[1] / n
a[2] = a[2] / n
print(str.join(" ", map(str, a)))