# your code goes here
'''
i=1
while i <=10:
print(i)
i +=1
'''
'''
i=2
while i<=20:
print(i)
i +=2
'''
'''
suma=0
i=1
while i<=50
suma +=1
i +=1
'''
'''
i=10
while i >=1:
print(i)
i -=1
'''
licznik=0
i=1
while i <=100:
if i % 5 == 0:
licznik +=1
i += 1
print(licznik)
'''
suma=0
i=2
while i <=20:
suma +=i
i +=2
'''
'''
i=1
while i <= 15:
print(i)
i +=2
'''
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