結果
問題 | No.2023 Tiling is Fun |
ユーザー | vwxyz |
提出日時 | 2022-09-22 00:43:22 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 166 ms / 2,000 ms |
コード長 | 3,113 bytes |
コンパイル時間 | 105 ms |
コンパイル使用メモリ | 13,056 KB |
実行使用メモリ | 27,904 KB |
最終ジャッジ日時 | 2024-06-01 17:39:24 |
合計ジャッジ時間 | 3,035 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 42 ms
12,288 KB |
testcase_01 | AC | 122 ms
22,016 KB |
testcase_02 | AC | 79 ms
17,024 KB |
testcase_03 | AC | 81 ms
17,280 KB |
testcase_04 | AC | 47 ms
12,672 KB |
testcase_05 | AC | 77 ms
16,768 KB |
testcase_06 | AC | 84 ms
17,408 KB |
testcase_07 | AC | 133 ms
23,936 KB |
testcase_08 | AC | 98 ms
19,584 KB |
testcase_09 | AC | 123 ms
22,528 KB |
testcase_10 | AC | 123 ms
22,400 KB |
testcase_11 | AC | 41 ms
12,160 KB |
testcase_12 | AC | 42 ms
12,160 KB |
testcase_13 | AC | 41 ms
12,160 KB |
testcase_14 | AC | 100 ms
20,096 KB |
testcase_15 | AC | 102 ms
19,968 KB |
testcase_16 | AC | 102 ms
19,968 KB |
testcase_17 | AC | 166 ms
27,904 KB |
testcase_18 | AC | 166 ms
27,904 KB |
testcase_19 | AC | 131 ms
23,296 KB |
ソースコード
import bisect import copy import decimal import fractions import heapq import itertools import math import random import sys import time from collections import Counter,deque,defaultdict from functools import lru_cache,reduce from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max def _heappush_max(heap,item): heap.append(item) heapq._siftdown_max(heap, 0, len(heap)-1) def _heappushpop_max(heap, item): if heap and item < heap[0]: item, heap[0] = heap[0], item heapq._siftup_max(heap, 0) return item from math import gcd as GCD read=sys.stdin.read readline=sys.stdin.readline readlines=sys.stdin.readlines write=sys.stdout.write def Extended_Euclid(n,m): stack=[] while m: stack.append((n,m)) n,m=m,n%m if n>=0: x,y=1,0 else: x,y=-1,0 for i in range(len(stack)-1,-1,-1): n,m=stack[i] x,y=y,x-(n//m)*y return x,y class MOD: def __init__(self,p,e=None): self.p=p self.e=e if self.e==None: self.mod=self.p else: self.mod=self.p**self.e def Pow(self,a,n): a%=self.mod if n>=0: return pow(a,n,self.mod) else: assert math.gcd(a,self.mod)==1 x=Extended_Euclid(a,self.mod)[0] return pow(x,-n,self.mod) def Build_Fact(self,N): assert N>=0 self.factorial=[1] if self.e==None: for i in range(1,N+1): self.factorial.append(self.factorial[-1]*i%self.mod) else: self.cnt=[0]*(N+1) for i in range(1,N+1): self.cnt[i]=self.cnt[i-1] ii=i while ii%self.p==0: ii//=self.p self.cnt[i]+=1 self.factorial.append(self.factorial[-1]*ii%self.mod) self.factorial_inve=[None]*(N+1) self.factorial_inve[-1]=self.Pow(self.factorial[-1],-1) for i in range(N-1,-1,-1): ii=i+1 while ii%self.p==0: ii//=self.p self.factorial_inve[i]=(self.factorial_inve[i+1]*ii)%self.mod def Fact(self,N): if N<0: return 0 retu=self.factorial[N] if self.e!=None and self.cnt[N]: retu*=pow(self.p,self.cnt[N],self.mod)%self.mod retu%=self.mod return retu def Fact_Inve(self,N): if self.e!=None and self.cnt[N]: return None return self.factorial_inve[N] def Comb(self,N,K,divisible_count=False): if K<0 or K>N: return 0 retu=self.factorial[N]*self.factorial_inve[K]%self.mod*self.factorial_inve[N-K]%self.mod if self.e!=None: cnt=self.cnt[N]-self.cnt[N-K]-self.cnt[K] if divisible_count: return retu,cnt else: retu*=pow(self.p,cnt,self.mod) retu%=self.mod return retu mod=998244353 MD=MOD(mod) a,b=map(int,readline().split()) a-=1;b-=1 MD.Build_Fact(a+b) ans=MD.Comb(a+b,a) print(ans)