# a=1
# while (a!=0) :
# a=int(input())
# if a==0 :
# break
# print(a)
# a=int(input())
# while(a!=0) :
# print(a)
# a-=1
# a=int(input())
# while(a!=0) :
# a-=1
# print(a)
# c=ord(input())
# t=ord('a')
# while t<=c :
# print(chr(t),end=' ')
# t+=1
# a=int(input())
# for i in range(0,a+1) :
# print(i)