August 2025
Intermediate
216 pages
5h 41m
Japanese
Content preview from Pythonレベルアップドリル 初心者から一歩進むための厳選問題集
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★★★★★
10
2以上の整数n、kが与えられます。「nを2倍した数でnを更新する」という操作
を何度か繰り返すことを考えます。このとき、ちょうどある回数mでnの値はk 以
上になります。この時点で操作の繰り返しを終了することにします。この繰り返し
の回数m を求めてください（mは 0 でも構いません）。
例えば、nを 2、kを 18 とします。上記の操作を1回繰り返すと nは4、2回繰り返
すとnは8、3回繰り返すとnは16となります。4回繰り返すと、nは32となり、n
>= kが成立します。ここで操作を終了するので、最終的な操作の回数であるm の値
は4 となります。
入力される値
次の形式で標準入力によって、nと k が1行で与えられます。
n k
また、入力される値は、次の条件を満たします。
nは 2 以上 100以下の整数
kは n 以上 10000以下の整数
入力値最終行の末尾に改行が1 つ入る
期待する出力
答えの数値を1行で出力してください。また、出力の末尾には改行を入れてくだ
さい。
2 18
4
27
Chapter
2
nがk未満である間はn を2 倍し続け、2倍した回数を変数に記録しておけば、答
えが求められます。このような、一定の条件を満たす間だけ処理を繰り返す場合は、 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.