650-2-Keys-Keyboard
Sat 17 May 2025
https://leetcode.com/problems/2-keys-keyboard
import pyutil as pyu
pyu.get_local_pyinfo()
print(pyu.ps2("python-dotenv"))
from typing import List
class Solution:
def minSteps(self, n: int) -> int:
if n <= 1:
return 0
# dp[i] := min steps to get i 'A'
# Copy 'A', then paste 'A' i - 1 times
dp = [i for i in range(n + 1)]
for i in range(2, n + 1):
for j in range(i // 2, 2, -1):
if i % j == 0:
dp[i] = dp[j] + i // j # Paste dp[j] i / j times
break
return dp[n]
new Solution().minSteps()
Score: 5
Category: leetcode