結果
問題 | No.1885 Flat Permutation |
ユーザー | U S |
提出日時 | 2022-03-25 23:14:29 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 1,944 bytes |
コンパイル時間 | 218 ms |
コンパイル使用メモリ | 82,048 KB |
実行使用メモリ | 72,960 KB |
最終ジャッジ日時 | 2024-10-14 07:22:25 |
合計ジャッジ時間 | 5,092 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 54 ms
60,672 KB |
testcase_01 | AC | 54 ms
61,184 KB |
testcase_02 | AC | 50 ms
61,056 KB |
testcase_03 | AC | 61 ms
65,280 KB |
testcase_04 | AC | 51 ms
60,928 KB |
testcase_05 | AC | 55 ms
61,056 KB |
testcase_06 | AC | 50 ms
61,184 KB |
testcase_07 | AC | 50 ms
60,800 KB |
testcase_08 | AC | 51 ms
61,184 KB |
testcase_09 | AC | 51 ms
61,184 KB |
testcase_10 | AC | 51 ms
60,800 KB |
testcase_11 | AC | 52 ms
61,184 KB |
testcase_12 | AC | 51 ms
61,312 KB |
testcase_13 | AC | 51 ms
60,928 KB |
testcase_14 | AC | 51 ms
60,800 KB |
testcase_15 | AC | 50 ms
61,184 KB |
testcase_16 | AC | 50 ms
61,184 KB |
testcase_17 | AC | 52 ms
60,672 KB |
testcase_18 | AC | 50 ms
60,800 KB |
testcase_19 | AC | 130 ms
72,832 KB |
testcase_20 | AC | 125 ms
72,960 KB |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 51 ms
61,056 KB |
testcase_24 | AC | 50 ms
61,056 KB |
testcase_25 | AC | 51 ms
60,800 KB |
testcase_26 | AC | 50 ms
61,056 KB |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | AC | 126 ms
72,704 KB |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | AC | 51 ms
61,312 KB |
testcase_33 | AC | 50 ms
61,312 KB |
testcase_34 | AC | 51 ms
61,184 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | AC | 51 ms
61,368 KB |
testcase_38 | AC | 51 ms
60,672 KB |
testcase_39 | AC | 50 ms
60,928 KB |
testcase_40 | AC | 69 ms
66,048 KB |
testcase_41 | AC | 89 ms
68,224 KB |
testcase_42 | AC | 65 ms
65,280 KB |
testcase_43 | AC | 127 ms
72,576 KB |
testcase_44 | AC | 128 ms
72,832 KB |
testcase_45 | AC | 126 ms
72,448 KB |
testcase_46 | AC | 127 ms
72,576 KB |
ソースコード
# import sys # input = sys.stdin.readline # import pypyjit # pypyjit.set_param('max_unroll_recursion=-1') def mp():return map(int,input().split()) def lmp():return list(map(int,input().split())) def mps(A):return [tuple(map(int, input().split())) for _ in range(A)] def stoi(LIST):return list(map(int,LIST)) def itos(LIST):return list(map(str,LIST)) def bitA(X,A):return X & 1<<A == 1<<A import math import bisect import heapq import time from copy import copy as cc from copy import deepcopy as dc from itertools import accumulate, product from collections import Counter, defaultdict, deque def ceil(U,V):return (U+V-1)//V def modf1(N,MOD):return (N-1)%MOD+1 inf = int(1e18+20) mod = 998244353 n,x,y = mp() if x > y:x,y = y,x if x != 1 and y != n: if y-x == 1: print(0) else: step = y - 1 - (x+1) - 3 jump = 1 ans = 1 now = 1 while step >= 0: bunsi = (step+1) * (step+2)* (step+3)% mod bunbo = jump * (step+jump+1)*(step+jump+2)% mod now *= bunsi*pow(bunbo,mod-2,mod) now %= mod ans += now ans %= mod step -= 3 jump += 1 print(ans % mod) elif x == 1: step = y-1-3 jump = 1 ans = 1 now = 1 while step >= 0: bunsi = (step + 1) * (step + 2) * (step + 3)% mod bunbo = jump * (step + jump + 1) * (step + jump + 2)% mod now *= bunsi * pow(bunbo, mod - 2, mod) now %= mod ans += now ans %= mod step -= 3 jump += 1 print(ans % mod) else: step = n-x-3 jump = 1 ans = 1 now = 1 while step >= 0: bunsi = (step + 1) * (step + 2) * (step + 3)% mod bunbo = jump * (step + jump + 1) * (step + jump + 2)% mod now *= bunsi * pow(bunbo, mod - 2, mod) now %= mod ans += now ans %= mod step -= 3 jump += 1 print(ans % mod)