結果

問題 No.2045 Two Reflections
ユーザー ShirotsumeShirotsume
提出日時 2022-05-17 14:29:06
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 123 ms / 2,000 ms
コード長 2,470 bytes
コンパイル時間 148 ms
コンパイル使用メモリ 82,176 KB
実行使用メモリ 97,280 KB
最終ジャッジ日時 2024-09-20 03:07:26
合計ジャッジ時間 3,570 ms
ジャッジサーバーID
(参考情報)
judge4 / judge1
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 43 ms
52,608 KB
testcase_01 AC 41 ms
52,608 KB
testcase_02 AC 90 ms
84,608 KB
testcase_03 AC 110 ms
84,072 KB
testcase_04 AC 110 ms
81,080 KB
testcase_05 AC 94 ms
78,300 KB
testcase_06 AC 96 ms
80,496 KB
testcase_07 AC 109 ms
80,744 KB
testcase_08 AC 123 ms
81,452 KB
testcase_09 AC 107 ms
86,076 KB
testcase_10 AC 103 ms
84,052 KB
testcase_11 AC 105 ms
77,500 KB
testcase_12 AC 38 ms
52,224 KB
testcase_13 AC 39 ms
52,480 KB
testcase_14 AC 38 ms
52,224 KB
testcase_15 AC 39 ms
52,608 KB
testcase_16 AC 39 ms
52,352 KB
testcase_17 AC 96 ms
97,280 KB
testcase_18 AC 107 ms
89,976 KB
testcase_19 AC 114 ms
90,192 KB
testcase_20 AC 98 ms
97,152 KB
testcase_21 AC 95 ms
84,608 KB
testcase_22 AC 100 ms
84,480 KB
testcase_23 AC 99 ms
84,480 KB
testcase_24 AC 92 ms
84,608 KB
testcase_25 AC 93 ms
84,352 KB
testcase_26 AC 98 ms
87,504 KB
testcase_27 AC 106 ms
87,580 KB
testcase_28 AC 96 ms
87,248 KB
testcase_29 AC 91 ms
84,992 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

class dsu():
    n=1
    parent_or_size=[-1 for i in range(n)]
    def __init__(self,N):
        self.n=N
        self.num = N
        self.parent_or_size=[-1 for i in range(N)]
    def merge(self,a,b):
        assert 0<=a<self.n, "0<=a<n,a={0},n={1}".format(a,self.n)
        assert 0<=b<self.n, "0<=b<n,b={0},n={1}".format(b,self.n)
        x=self.leader(a)
        y=self.leader(b)
        if x==y:
            return x
        self.num -= 1
        if (-self.parent_or_size[x]<-self.parent_or_size[y]):
            x,y=y,x
        self.parent_or_size[x]+=self.parent_or_size[y]
        self.parent_or_size[y]=x
        return x
    def same(self,a,b):
        assert 0<=a<self.n, "0<=a<n,a={0},n={1}".format(a,self.n)
        assert 0<=b<self.n, "0<=b<n,b={0},n={1}".format(b,self.n)
        return self.leader(a)==self.leader(b)
    def leader(self,a):
        assert 0<=a<self.n, "0<=a<n,a={0},n={1}".format(a,self.n)
        if (self.parent_or_size[a]<0):
            return a
        self.parent_or_size[a]=self.leader(self.parent_or_size[a])
        return self.parent_or_size[a]
    def size(self,a):
        assert 0<=a<self.n, "0<=a<n,a={0},n={1}".format(a,self.n)
        return -self.parent_or_size[self.leader(a)]
    def groups(self):
        leader_buf=[0 for i in range(self.n)]
        group_size=[0 for i in range(self.n)]
        for i in range(self.n):
            leader_buf[i]=self.leader(i)
            group_size[leader_buf[i]]+=1
        result=[[] for i in range(self.n)]
        for i in range(self.n):
            result[leader_buf[i]].append(i)
        result2=[]
        for i in range(self.n):
            if len(result[i])>0:
                result2.append(result[i])
        return result2
    def count(self):
        return self.num

n, p, q = map(int,input().split())
mod = 998244353

a = list(range(0, n))

for i in range(p // 2):
    a[i], a[p - i - 1] = a[p - i - 1], a[i]

for i in range(q // 2):
    a[n - q + i], a[n - i - 1] = a[n - i - 1], a[n - q + i]

U = dsu(n)

for i in range(n):
    U.merge(i, a[i])

count = [0] * (n + 1)
for v in U.groups():
    x = len(v)
    for i in range(2, 10 ** 5 + 1):
        if x == 1:
            break
        cnt = 0
        while x % i == 0:
            x //= i
            cnt += 1
        count[i] = max(cnt, count[i])
ans = 1
for i in range(1, n + 1):
    if count[i] >= 1:
        ans *= pow(i, count[i])
        ans %= mod
if p > 1 and q > 1:
    ans *= 2

ans %= mod

print(ans)

0