Problem Description:
By nature,
an average Indian believes in saving money. Some reports suggest that an
average Indian manages to save approximately 30+% of his salary. Dhaniram is
one such hard working fellow. With a view of future expenses, Dhaniram resolves
to save a certain amount in order to meet his cash flow demands in the future.
Consider the following example. Dhaniram wants to buy a TV. He needs to pay Rs
2000/- per month for 12 installments to own the TV. If let's say he gets 4%
interest per annum on his savings bank account, then Dhaniram will need to
deposit a certain amount in the bank today, such that he is able to withdraw Rs
2000/- per month for the next 12 months without requiring any additional
deposits throughout. Your task is to find out how much Dhaniram should deposit
today so that he gets assured cash flows for a fixed period in the future,
given the rate of interest at which his money will grow during this period.
Input
Format:
First line
contains desired cash flow MSecond line contains period in months denoted by
TThird line contains rate per annum R expressed in percentage at which
deposited amount will grow
Output
Format:
Print total
amount of money to be deposited now rounded off to the nearest integer
Constraints: M > 0 T > 0 R >= 0 Calculation should be done upto
11-digit precision
Example 1
Input:
500
3
12
Output:
1470
Example 2
Input:
600
3
5.9
Output:
17824
Example 3
Input:
500
2
0
Output:
100
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