結果
問題 | No.1102 Remnants |
ユーザー | 👑 Kazun |
提出日時 | 2021-06-16 20:31:58 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 441 ms / 2,000 ms |
コード長 | 3,523 bytes |
コンパイル時間 | 277 ms |
コンパイル使用メモリ | 82,160 KB |
実行使用メモリ | 135,900 KB |
最終ジャッジ日時 | 2024-06-10 01:13:39 |
合計ジャッジ時間 | 6,727 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 36 ms
53,848 KB |
testcase_01 | AC | 37 ms
53,224 KB |
testcase_02 | AC | 38 ms
54,628 KB |
testcase_03 | AC | 38 ms
54,128 KB |
testcase_04 | AC | 38 ms
54,112 KB |
testcase_05 | AC | 364 ms
116,904 KB |
testcase_06 | AC | 124 ms
82,648 KB |
testcase_07 | AC | 441 ms
135,900 KB |
testcase_08 | AC | 85 ms
76,760 KB |
testcase_09 | AC | 91 ms
77,784 KB |
testcase_10 | AC | 71 ms
76,168 KB |
testcase_11 | AC | 86 ms
76,896 KB |
testcase_12 | AC | 92 ms
77,824 KB |
testcase_13 | AC | 91 ms
78,052 KB |
testcase_14 | AC | 241 ms
98,704 KB |
testcase_15 | AC | 200 ms
93,584 KB |
testcase_16 | AC | 401 ms
121,192 KB |
testcase_17 | AC | 393 ms
118,032 KB |
testcase_18 | AC | 399 ms
121,408 KB |
testcase_19 | AC | 182 ms
91,192 KB |
testcase_20 | AC | 106 ms
80,324 KB |
testcase_21 | AC | 261 ms
101,816 KB |
testcase_22 | AC | 340 ms
112,080 KB |
testcase_23 | AC | 275 ms
104,180 KB |
testcase_24 | AC | 222 ms
96,236 KB |
testcase_25 | AC | 406 ms
122,640 KB |
testcase_26 | AC | 98 ms
78,312 KB |
testcase_27 | AC | 162 ms
87,996 KB |
ソースコード
class Modulo_Error(Exception): pass class Modulo(): def __init__(self,a,n): self.a=a%n self.n=n def __str__(self): return "{} (mod {})".format(self.a,self.n) def __repr__(self): return self.__str__() #+,- def __pos__(self): return self def __neg__(self): return Modulo(-self.a,self.n) #等号,不等号 def __eq__(self,other): if isinstance(other,Modulo): return (self.a==other.a) and (self.n==other.n) elif isinstance(other,int): return (self-other).a==0 def __neq__(self,other): return not(self==other) def __le__(self,other): a,p=self.a,self.n b,q=other.a,other.n return (a-b)%q==0 and p%q==0 def __ge__(self,other): return other<=self def __lt__(self,other): return (self<=other) and (self!=other) def __gt__(self,other): return (self>=other) and (self!=other) #加法 def __add__(self,other): if isinstance(other,Modulo): if self.n!=other.n: raise Modulo_Error("異なる法同士の演算です.") return Modulo(self.a+other.a,self.n) elif isinstance(other,int): return Modulo(self.a+other,self.n) def __radd__(self,other): if isinstance(other,int): return Modulo(self.a+other,self.n) #減法 def __sub__(self,other): return self+(-other) def __rsub__(self,other): if isinstance(other,int): return -self+other #乗法 def __mul__(self,other): if isinstance(other,Modulo): if self.n!=other.n: raise Modulo_Error("異なる法同士の演算です.") return Modulo(self.a*other.a,self.n) elif isinstance(other,int): return Modulo(self.a*other,self.n) def __rmul__(self,other): if isinstance(other,int): return Modulo(self.a*other,self.n) #Modulo逆数 def inverse(self): return self.Modulo_Inverse() def Modulo_Inverse(self): x0, y0, x1, y1 = 1, 0, 0, 1 a,b=self.a,self.n while b != 0: q, a, b = a // b, b, a % b x0, x1 = x1, x0 - q * x1 y0, y1 = y1, y0 - q * y1 if a!=1: raise Modulo_Error("{}の逆数が存在しません".format(self)) else: return Modulo(x0,self.n) #除法 def __truediv__(self,other): return self*(other.Modulo_Inverse()) def __rtruediv__(self,other): return other*(self.Modulo_Inverse()) #累乗 def __pow__(self,other): if isinstance(other,int): u=abs(other) r=Modulo(pow(self.a,u,self.n),self.n) if other>=0: return r else: return r.Modulo_Inverse() else: b,n=other.a,other.n if pow(self.a,n,self.n)!=1: raise Modulo_Error("矛盾なく定義できません.") else: return self**b #================================================ N,K=map(int,input().split()) A=["*"]+list(map(int,input().split())) Mod=10**9+7 L=[0]*(N+1); L[1]=Modulo(1,Mod) for i in range(2,N+1): L[i]=Modulo(i+K-1,Mod)/Modulo(i-1,Mod)*L[i-1] R=[0]*(N+1); R[N]=Modulo(1,Mod) for i in range(N-1,0,-1): R[i]=Modulo(N-i+K,Mod)/Modulo(N-i,Mod)*R[i+1] X=Modulo(0,Mod) for a,l,r in zip(A[1:],L[1:],R[1:]): X+=a*l*r print(X.a)