# start with 891
# i=891
# while i<931:
#     z=i-890
#     if z%3==0:
#         print(z)
#     i+=1


# i=5
# while i<=50:
#     print(i)
#     i=i+5

# i=50
# while i<=100:
#     if i%2!=0:
#         print(i)
#     i+=1

# i=51
# while i<=99:
#     print(i)
#     i=i+2


# n=int(input("enter the n no."))
# i=1
# s=0
# while i<=n:
#     user=int(input("enter the no"))
#     s=s+user
#     i+=1
# print("s",s)

# prime no. question
# num=int(input("enter the no."))
# i=1
# c=0
# while i<=num:
#     if num%i==0:
#         # print(num,"it is prime no.")
#         c=c+1
#     i=i+1
# if c==2:
#     print("its prime number")
# else:
#     print("it is not prime no.")
    

# i=5
# while i<=5:
#     print(i*"*")
#     i=i-1

# it is perfect number
# num=int(input("enter the no."))
# i=1
# s=0
# while i<=num:
#     if num%i==0:
#         # print(i, "it is perfect no.")
#         i=i+1
#     s=s+num
# if i+num==s:
#     print("it is perfect no.")
# else:
#     print("it is not perfect no.")
         