a = 10; for i in range(3): a -= 1
a = 10 for i in range(3): a -= i
a = 2 for i in range(5): a += i
a = 4 for i in range(4): a += a
for i in range(3,1,-1): print ( i, end="" )
print ( 4, end="" ) for i in range(4,2,-1): print ( 2*i, end="" )
print ( 1, end="" ) for i in range(3,5): print ( i, end="" )