n = int(input())
a = [[0 for j in range(3)] for i in range(n)]

yw = 0
sx = 0
yy = 0
for i in range(n):
    t = input().split()
    for j in range(3):
        a[i][j] = int(t[j])

for i in range(n):
    yw += a[i][0]
    sx += a[i][1]
    yy += a[i][2]
print('%.1f %.1f %.1f' % (yw / n, sx / n, yy / n), end='')
/**************************************************************
	Problem: 1274
	User: admin
	Language: Python
	Result: Accepted
	Time:91 ms
	Memory:34480 kb
****************************************************************/