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LINE Verda プログラミングコンテスト (AtCoder Beginner Contest 263) 不参戦記

Last updated at Posted at 2022-08-06

LINE Verda プログラミングコンテスト (AtCoder Beginner Contest 263) 不参戦記

ABC263A - Full House

書くだけ.

from collections import Counter

A, B, C, D, E = map(int, input().split())

if sorted(Counter([A, B, C, D, E]).values()) == [2, 3]:
    print('Yes')
else:
    print('No')

ABC263B - Ancestor

書くだけ.

N, *P = map(int, open(0).read().split())

d = {}
for i in range(N - 1):
    d[i + 2] = P[i]

result = 0
x = N
while x != 1:
    x = d[x]
    result += 1
print(result)

ABC263C - Monotonically Increasing

どうすれば良いのかはすぐわかるのに、書こうとするとなかなか上手くいかないのは、戻って続きをやる(ためにステートを戻す)みたいな再帰的な入れ子構造が難しいからか. 関数を使ってストレートに書いても良い気がするが、リストをスタックとして使って書けた.

N, M = map(int, input().split())

a = [0]
while len(a) != 0:
    a[-1] += 1
    if a[-1] > M:
        a.pop()
        continue
    if len(a) == N:
        print(*a)
    else:
        a.append(a[-1])
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