#33069: Python: AC (19ms, 3.3MB)


imlindora@gmail.com (Augus)


x=int(input())
l=[]
a,b,c=map(int,input().split())
for i in range(1,x+1):
    l.insert(0,i)
l.remove(a)
l.remove(b)
l.remove(c)
for i in l:
    print(f'No. {i}')