結果
問題 | No.1102 Remnants |
ユーザー |
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提出日時 | 2020-07-10 00:06:31 |
言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
結果 |
AC
|
実行時間 | 1,768 ms / 2,000 ms |
コード長 | 1,757 bytes |
コンパイル時間 | 445 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 48,464 KB |
最終ジャッジ日時 | 2024-10-08 18:39:30 |
合計ジャッジ時間 | 19,214 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 25 |
ソースコード
import sys sys.setrecursionlimit(10 ** 6) def II(): return int(sys.stdin.readline()) def MI(): return map(int, sys.stdin.readline().split()) def LI(): return list(map(int, sys.stdin.readline().split())) def SI(): return sys.stdin.readline()[:-1] def LLI(rows_number): return [LI() for _ in range(rows_number)] def LLI1(rows_number): return [LI1() for _ in range(rows_number)] int1 = lambda x: int(x) - 1 def MI1(): return map(int1, sys.stdin.readline().split()) def LI1(): return list(map(int1, sys.stdin.readline().split())) p2D = lambda x: print(*x, sep="\n") dij = [(1, 0), (0, 1), (-1, 0), (0, -1)] class mint: def __init__(self, x): self.__x = x % md def __repr__(self): return str(self.__x) def __neg__(self): return mint(-self.__x) def __add__(self, other): if isinstance(other, mint): other = other.__x return mint(self.__x + other) def __sub__(self, other): if isinstance(other, mint): other = other.__x return mint(self.__x - other) def __rsub__(self, other): return mint(other - self.__x) def __mul__(self, other): if isinstance(other, mint): other = other.__x return mint(self.__x * other) __radd__ = __add__ __rmul__ = __mul__ def __truediv__(self, other): if isinstance(other, mint): other = other.__x return mint(self.__x * pow(other, md - 2, md)) def __rtruediv__(self, other): return mint(other * pow(self.__x, md - 2, md)) def __pow__(self, power, modulo=None): return mint(pow(self.__x, power, md)) md=10**9+7 n,k=MI() aa=MI() hh=[-1,mint(1)] for i in range(1,n):hh.append(hh[-1]*(k+i)/i) ans=mint(0) for i,a in enumerate(aa): ans+=a*hh[i+1]*hh[n-i] print(ans)