def orig(s):
    input=lambda: s
    x,*l=input().split()
    d=-((int(x)*8-sum(('vexuobcl'+2*'clornielatrisuke'+4*'Ratahoesuhihie').count(q[-3:-1])*(1-12*(q[0]=="N"))for q in l))//8)
    print((1,"You must construct %s additional pylon"%d+'s!'[d<2:])[d>0])
 
def new(s):
    input=lambda: s
    x,*l=input().split()
    d=-((int(x)*8-sum((('vexuobcl'+2*'clsuie'+4*'Ratahoiesuhihi').count(q[-3:-1])*(1-12*(q[0]=="N"))or 2)for q in l))//8)
    print((1,"You must construct %s additional pylon"%d+'s!'[d<2:])[d>0])
 
s="0 Nexus MothershipCore Mothership Carrier"
orig(s)
new(s)

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