結果
問題 | No.1621 Sequence Inversions |
ユーザー | kyaneko999 |
提出日時 | 2021-07-23 07:51:45 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,807 ms / 3,000 ms |
コード長 | 3,629 bytes |
コンパイル時間 | 181 ms |
コンパイル使用メモリ | 82,372 KB |
実行使用メモリ | 279,380 KB |
最終ジャッジ日時 | 2024-07-18 04:39:00 |
合計ジャッジ時間 | 26,088 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 59 ms
65,972 KB |
testcase_01 | AC | 55 ms
65,256 KB |
testcase_02 | AC | 69 ms
73,720 KB |
testcase_03 | AC | 76 ms
74,952 KB |
testcase_04 | AC | 999 ms
224,828 KB |
testcase_05 | AC | 52 ms
65,512 KB |
testcase_06 | AC | 72 ms
73,924 KB |
testcase_07 | AC | 100 ms
81,852 KB |
testcase_08 | AC | 1,599 ms
278,968 KB |
testcase_09 | AC | 1,548 ms
279,320 KB |
testcase_10 | AC | 1,454 ms
279,152 KB |
testcase_11 | AC | 1,609 ms
279,060 KB |
testcase_12 | AC | 1,807 ms
278,964 KB |
testcase_13 | AC | 1,735 ms
279,028 KB |
testcase_14 | AC | 1,770 ms
278,824 KB |
testcase_15 | AC | 1,771 ms
278,940 KB |
testcase_16 | AC | 1,269 ms
221,932 KB |
testcase_17 | AC | 1,725 ms
271,132 KB |
testcase_18 | AC | 1,238 ms
215,948 KB |
testcase_19 | AC | 77 ms
74,804 KB |
testcase_20 | AC | 417 ms
110,632 KB |
testcase_21 | AC | 1,745 ms
279,012 KB |
testcase_22 | AC | 1,765 ms
279,380 KB |
testcase_23 | AC | 1,766 ms
278,864 KB |
testcase_24 | AC | 53 ms
66,172 KB |
testcase_25 | AC | 59 ms
69,396 KB |
testcase_26 | AC | 52 ms
66,400 KB |
testcase_27 | AC | 51 ms
65,364 KB |
testcase_28 | AC | 51 ms
65,116 KB |
ソースコード
from sys import exit, stdin, setrecursionlimit from collections import deque, defaultdict, Counter from copy import deepcopy from bisect import bisect_left, bisect_right, insort_left, insort_right from heapq import heapify, heappop, heappush from itertools import product, permutations, combinations, combinations_with_replacement from functools import reduce from math import gcd, sin, cos, tan, asin, acos, atan, atan2, degrees, radians, ceil, floor, sqrt, factorial from math import pi as PI from random import randint # from decimal import Decimal setrecursionlimit(500000) INF = (1<<61)-1 EPS = 1e-10 MOD = 10**9+7 MOD = 998244353 def input(): return stdin.readline().strip('\n') def intput(): return int(input()) def minput(): return input().split() def linput(): return input().split() def mint(): return map(int,input().split()) def lint(): return list(map(int,input().split())) def ilint(): return intput(),lint() def lcm(x,y): return x*y//gcd(x,y) def lgcd(l): return reduce(gcd,l) def llcm(l): return reduce(lcm,l) def powmod(n,i,mod=MOD): return pow(n,mod-1+i,mod) if i<0 else pow(n,i,mod) def div2(x): return x.bit_length() def div10(x): return len(str(x))-(x==0) def popcount(x): return bin(x).count('1') def digit(x,i,max_len=None): s = str(x) if max_len: i -= max_len-len(s) return int(s[i-1]) if i>0 else 0 def digitsum(x): ans = 0 for i in range(div10(x)): ans += digit(x,i+1) return ans def pf(x,mode='counter'): C = Counter() p = 2 while x>1: k = 0 while x%p==0: x //= p k += 1 if k>0: C[p] += k p = p+2-(p==2) if p*p<x else x if mode=='counter': return C S = set([1]) for k in C: T = set() for x in S: for i in range(C[k]+1): T.add(x*(k**i)) S = T if mode=='set': return S if mode=='list': return sorted(S) def isprime(x): if x<2: return False return len(pf(x,'set'))==2 def matmul(A, B): # import numpy A1, A2 = A >> 15, A & (1 << 15) - 1 B1, B2 = B >> 15, B & (1 << 15) - 1 X = np.dot(A1, B1) % MOD Y = np.dot(A2, B2) Z = np.dot(A1 + A2, B1 + B2) - X - Y return ((X << 30) + (Z << 15) + Y) % MOD def matpow(A, N): P = np.eye(A.shape[0], dtype=np.int64) while N: if N & 1: P = matmul(P, A) A = matmul(A, A) N >>= 1 return P def zash(S): lis = sorted(S) dic = {} for i,x in enumerate(lis): dic[x] = i return lis, dic def pr(*x): print(*x, sep='', end='') if len(x) else print() def lprint(l): for x in l: print(x) def ston(c, c0='a'): return ord(c)-ord(c0) def ntos(x, c0='a'): return chr(x+ord(c0)) def judge(x, l=['Yes', 'No']): print(l[0] if x else l[1]) def debug(*x, flag=1): if flag: print(*x) ###################################################### N,K=mint() M=N*(N-1)//2 A=lint() C=Counter(A) dp=[0]*(M+1) dp[0]=1 cnt=0 M0=N*N//4 dpp=[[[0]*(M0+1) for _ in range(N+1)] for _ in range(N+1)] for c in range(N+1): dpp[0][c][0]=1 for j in range(1,N+1): for c in range(N+1): for x in range(M0+1): dpp[j][c][x]=dpp[j-1][c][x] if x-j>=0: dpp[j][c][x]+=dpp[j][c-1][x-j] dpp[j][c][x]%=MOD for key in sorted(C.keys()): v=C[key] Mp=cnt*v nxt=[0]*(M+1) for x in range(Mp+1): for k in range(M-x+1): nxt[k+x]+=dp[k]*dpp[v][cnt][x] nxt[k+x]%=MOD dp=nxt cnt+=v print(dp[K])