print("Hello world!")

number = 5
number = 7
number = "hello"

hello = "hello"




# line comment




pi = 3.14
three = 3.0

piFloor = int(pi)

T = True




print("Je rok", 2022)
print("Je rok " + str(2022))

def add_two():
    a = int(input())
    b = int(input())
    print(a + b)



add_two()

zeros = [0] * 10
numbers = [11, 12, 13]

print(numbers[0])  # 11
print(numbers)     # [11, 12, 13]

print(hello[0])    # h
 
if number < 10:
    print("less than 10")
elif number < 20:
    print("greater than 10")
    print("less than 20")
else:
    print("greater than 20")



for i in range(10):
    print(i, end=",")
print()



for n in numbers:
    print(n, end=",")
print()

for letter in hello:
    print(letter)

while True:
    line = input()
    if line == "":
        break
        
    print(line)
    
    

# load numbers on one line
numbers = [int(i) for i in input().split()]









def fibonacci(n):
    if n == 0:
        return 0
    if n == 1:
        return 1
    return fibonacci(n - 1) + fibonacci(n - 2)
    
fib3 = fibonacci(3)