x = 123
y = 1000
d = y-x
coin = [0,0,0,0,0,0]
while d!=0:
if d >= 500:
coin[0] += 1
d = d-500
elif d >= 100:
coin[1] += 1
d = d-100
elif d >= 50:
coin[2] += 1
d = d-50
elif d >= 10:
coin[3] += 1
d = d-10
elif d >= 5:
coin[4] += 1
d = d-5
elif d >= 1:
coin[5] += 1
d = d-1
print('500 x {}'.format(coin[0]))
print('100 x {}'.format(coin[1]))
print('50 x {}'.format(coin[2]))
print('10 x {}'.format(coin[3]))
print('5 x {}'.format(coin[4]))
print('1 x {}'.format(coin[5]))
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