a=str(input())
b=int(a[1]+a[0])
c=int(a)
d=0
for i in range(10,101):
    if i+c==(i%10*10+i//10)+b and i!=a and i!=b and (i%10*10+i//10)>=10:
        print(i)
        d+=1
if d==0:
    print("No")