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Suppose we have a number n; we have to find the maximum number of characters we can enter using n operations where each operation is like

Inserting the character "x".

Copy all characters.

Paste

So, if the input is like n = 12, then the output will be 81.

To solve this, we will follow these steps

if n <= 4, then

return n

v := 6, x := 3, i := 5, j := 0

while i is not same as n, do

v := v + x

i := i + 1, j := j + 1

if j is divisible by 3, then

x := integer of (x * 1.5)

otherwise when j is not divisible by 3, then

do nothing

otherwise,

x := x * 2

return v

Let us see the following implementation to get better understanding

class Solution: def solve(self, n): if n <= 4: return n v = 6 x = 3 i = 5 j = 0 while i != n: v += x i += 1 j += 1 if j % 3 == 0: x = int(x * 1.5) elif j % 3 == 1: pass else: x *= 2 return v ob = Solution() n = 12 print(ob.solve(n))

12

81

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