Python question

n=int(input)

nnn=1000-n

count=0
while nnn>0:
    nnn=nnn%500
    count+=nnn//500
    nnn%=100
    count+=nnn//100
    nnn=nnn%50
    count+=nnn//50
    nnn%=10
    count+=nnn//10
    nnn=nnn%5
    count+=nnn//5
    nnn%=1
    count+=nnn//1
    if nnn==0:
        break

N = int(input())
rest = 1000 - N
moneys = [500, 100, 50, 10, 5, 1]
result = 0

for money in moneys:
    if rest == 0:
        break

    result += rest // money
    rest %= money

print(result)