'''
1
i=1
while i <=5:
    print(i)
    i = i+1
    
2
i=2
while i <=10:
    print(i)
    i = i+2   
    
3
i=10
while i >=1:
    print(i)
    i = i-1

4
i=1
while i <=100:
    print(i)
    i = i+5

5
suma=0
i=1
while i <=10:
    suma=suma+i
    i=i+1
print(suma)
    

9
for i in range (1,6):
    print(i)

10
for i in range (2,11,2):
    print(i)
    
11
suma=0
i=1
for i in range(11):
    suma=suma+i
print(suma)

19
p=input('napisz python: ')
i=0
while i <len(p):
    print(p[i])
    i +=1

17
for i in range (21):
    if i > 0 and i<21:
        if i%4 ==0:
            print(i)
12
for i in range (7):
    print("b")


8
i=100
while i <10000:
    if i%7==0:
        print(i)
        break
    i=i+1

13
for i in range (1,6):
    print (i**2)

14
for i in range (10,0,-1):
    print(i)

18
for i in range (1,20):
    if i <10:
        print(i)

6
i=0
while i <=9:
    print("a")
    i=i+1
    '''