結果

問題 No.1629 Sorting Integers (SUM of M)
ユーザー H20H20
提出日時 2021-07-30 22:16:31
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 106 ms / 2,000 ms
コード長 2,222 bytes
コンパイル時間 275 ms
コンパイル使用メモリ 82,432 KB
実行使用メモリ 115,712 KB
最終ジャッジ日時 2024-09-16 00:41:19
合計ジャッジ時間 2,743 ms
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 14
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 #

# ModInt 参考は以下のサイト
# https://qiita.com/wotsushi/items/c936838df992b706084c

MOD = 10**9+7
class ModInt:
    def __init__(self, x):
        self.x = x % MOD

    def __str__(self):
        return str(self.x)

    __repr__ = __str__

    def __add__(self, other):
        return (
            ModInt(self.x + other.x) if isinstance(other, ModInt) else
            ModInt(self.x + other)
        )

    def __sub__(self, other):
        return (
            ModInt(self.x - other.x) if isinstance(other, ModInt) else
            ModInt(self.x - other)
        )

    def __mul__(self, other):
        return (
            ModInt(self.x * other.x) if isinstance(other, ModInt) else
            ModInt(self.x * other)
        )

    def __truediv__(self, other):
        return (
            ModInt(
                self.x * pow(other.x, MOD - 2, MOD)
            ) if isinstance(other, ModInt) else
            ModInt(self.x * pow(other, MOD - 2, MOD))
        )

    def __pow__(self, other):
        return (
            ModInt(pow(self.x, other.x, MOD)) if isinstance(other, ModInt) else
            ModInt(pow(self.x, other, MOD))
        )

    __radd__ = __add__

    def __rsub__(self, other):
        return (
            ModInt(other.x - self.x) if isinstance(other, ModInt) else
            ModInt(other - self.x)
        )

    __rmul__ = __mul__

    def __rtruediv__(self, other):
        return (
            ModInt(
                other.x * pow(self.x, MOD - 2, MOD)
            ) if isinstance(other, ModInt) else
            ModInt(other * pow(self.x, MOD - 2, MOD))
        )

    def __rpow__(self, other):
        return (
            ModInt(pow(other.x, self.x, MOD)) if isinstance(other, ModInt) else
            ModInt(pow(other, self.x, MOD))
        )




N = int(input())
A = list(map(int, input().split())) 
L = [1]
mod = MOD
for i in range(3*10**5):
    L.append(L[-1]*10%mod)

fact = [1]
for n in range(1,3*10**5):
    fact.append(fact[-1]*n%MOD)

temp = ModInt(fact[N])
for i in range(9):
    temp = temp / ModInt(fact[A[i]])
su = ModInt(0)
for i in range(9):
    su = su + (i+1) * temp * ModInt(A[i]) / ModInt(N)

ans = 0
for i in range(N):
    ans = ans + L[i]*su
print(ans) 
0