結果
問題 | No.1621 Sequence Inversions |
ユーザー | kyaneko999 |
提出日時 | 2021-07-23 07:48:52 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 3,628 bytes |
コンパイル時間 | 200 ms |
コンパイル使用メモリ | 82,296 KB |
実行使用メモリ | 279,368 KB |
最終ジャッジ日時 | 2024-07-18 04:32:53 |
合計ジャッジ時間 | 12,991 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 60 ms
65,980 KB |
testcase_01 | RE | - |
testcase_02 | AC | 76 ms
72,324 KB |
testcase_03 | AC | 77 ms
74,544 KB |
testcase_04 | AC | 249 ms
224,676 KB |
testcase_05 | RE | - |
testcase_06 | AC | 69 ms
70,964 KB |
testcase_07 | AC | 94 ms
81,800 KB |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | AC | 507 ms
279,044 KB |
testcase_11 | WA | - |
testcase_12 | AC | 757 ms
279,168 KB |
testcase_13 | AC | 797 ms
279,368 KB |
testcase_14 | WA | - |
testcase_15 | AC | 840 ms
279,168 KB |
testcase_16 | AC | 630 ms
221,908 KB |
testcase_17 | AC | 817 ms
271,488 KB |
testcase_18 | AC | 606 ms
215,912 KB |
testcase_19 | AC | 75 ms
72,064 KB |
testcase_20 | AC | 237 ms
109,952 KB |
testcase_21 | AC | 869 ms
279,040 KB |
testcase_22 | AC | 843 ms
278,968 KB |
testcase_23 | AC | 848 ms
278,912 KB |
testcase_24 | AC | 59 ms
65,152 KB |
testcase_25 | AC | 62 ms
66,944 KB |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
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(N+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])