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hello-algo/ja/codes/python/chapter_dynamic_programming/climbing_stairs_dfs.py
T
Yudong Jin 7257641e0e Retranslate the complete Japanese online edition from Chinese (#2008)
* Retranslate the complete Japanese online edition from Chinese

* Fit Japanese homepage labels and localize heading permalinks

* Point Japanese contribution instructions to the Japanese preview

* Replace locale conditionals with multilingual UI tables
2026-10-30 02:12:26 +08:00

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Python

"""
File: climbing_stairs_dfs.py
Created Time: 2023-06-30
Author: krahets ([email protected])
"""
def dfs(i: int) -> int:
"""探索"""
# dp[1] と dp[2] は既知なので、その値を返す
if i == 1 or i == 2:
return i
# dp[i] = dp[i-1] + dp[i-2]
count = dfs(i - 1) + dfs(i - 2)
return count
def climbing_stairs_dfs(n: int) -> int:
"""階段の上り方:探索"""
return dfs(n)
"""実行用コード"""
if __name__ == "__main__":
n = 9
res = climbing_stairs_dfs(n)
print(f"{n} 段の階段を上る方法は全部で {res} 通り")