A=int(input())
a=A-1
s=[]
i=1
p=0
print(A)
for _ in range(a):
    s=map(int,input().split())
b=sum(s)
for _ in range(100):
    w=b+i
    if w%A == 0:
        p=p+1
    i=i+1
print(p)