em,ep,ec = 0.0,0.0,0.0
em2,ep2,ec2 = 0.0,0.0,0.0
emp,emc,epc = 0.0,0.0,0.0
n = int(input())
for _ in range(n):
    m,p,c = map(int,input().split())
    em+=m
    ep+=p
    ec+=c
    em2+=m**2
    ep2+=p**2
    ec2+=c**2
    emp+=m*p
    emc+=m*c
    epc+=p*c

rmp=(n*emp-em*ep)/((n*em2-(em)**2)*(n*ep2-(ep)**2))**0.5
rpc=(n*epc-ec*ep)/((n*ec2-(ec)**2)*(n*ep2-(ep)**2))**0.5
rmc=(n*emc-em*ec)/((n*em2-(em)**2)*(n*ec2-(ec)**2))**0.5

print('%.2f\n%.2f\n%.2f' %(rmp,rpc,rmc))