balance = 4773
annualInterestRate = 0.2
mIR = annualInterestRate / 12
minPay = 10
remain = balance

while remain >= 0:
    minPay += 10
    remain = balance
    month = 1

    while month <= 12 and remain >= 0:
        remain -= minPay
        interest = mIR * remain
        remain += interest
        month += 1

print(minPay)