There is only one character 'A' on the screen of a notepad. You can perform one of two operations on this notepad for each step:
Given an integer n, return the minimum number of operations to get the character 'A' exactly n times on the screen.
Examples
Example 1
Input: n = 3
Output: 3
Explanation: Initially, we have one character 'A'.
In step 1, we use Copy All operation.
In step 2, we use Paste operation to get 'AA'.
In step 3, we use Paste operation to get 'AAA'.
Example 2
Input: n = 1
Output: 0
Constraints
1 <= n <= 1000
650. 2 Keys Keyboard
Medium
30 Points
Math
Dynamic Programming
There is only one character 'A' on the screen of a notepad. You can perform one of two operations on this notepad for each step:
Given an integer n, return the minimum number of operations to get the character 'A' exactly n times on the screen.
Examples
Example 1
Input: n = 3
Output: 3
Explanation: Initially, we have one character 'A'.
In step 1, we use Copy All operation.
In step 2, we use Paste operation to get 'AA'.
In step 3, we use Paste operation to get 'AAA'.