# i = 1
# while i<=10:
#     i=i+1
#     print(i)

# i = 1
# sum=0
# while(i <= 140):
#     if(i % 3 == 0):
#         sum=sum+i
#     i = i + 1
# print(sum) 


# i=0
# while(i<10):
#     j = 0
#     while(j<=5):

#         print(j)
#         j = j + 1
#         i = i + 1
 
# i = 0
# num = int(input("Enter your number:- "))
# while(i < 1):
#     if(num > 0):
#         print("it is positive")
#     elif(num < 0):
#         print("it is negetive")
#     else :
#         print("zero")
#     i = i + 1

 #leap year:-
# year=int(input("enter the number"))
# if year%4==0 or year%400==0 or year%100==0:
#     print("leap year")
# else:
#     print("not leap year") 