結果
問題 | No.1646 Avoid Palindrome |
ユーザー | puzneko |
提出日時 | 2021-10-24 23:29:41 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,809 ms / 3,000 ms |
コード長 | 1,195 bytes |
コンパイル時間 | 152 ms |
コンパイル使用メモリ | 82,368 KB |
実行使用メモリ | 466,944 KB |
最終ジャッジ日時 | 2024-04-10 04:42:56 |
合計ジャッジ時間 | 54,760 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 44 ms
60,676 KB |
testcase_01 | AC | 43 ms
62,100 KB |
testcase_02 | AC | 45 ms
59,868 KB |
testcase_03 | AC | 48 ms
63,380 KB |
testcase_04 | AC | 1,644 ms
444,180 KB |
testcase_05 | AC | 1,607 ms
443,492 KB |
testcase_06 | AC | 1,418 ms
431,012 KB |
testcase_07 | AC | 1,638 ms
443,772 KB |
testcase_08 | AC | 1,650 ms
447,844 KB |
testcase_09 | AC | 1,472 ms
429,016 KB |
testcase_10 | AC | 1,496 ms
437,672 KB |
testcase_11 | AC | 1,441 ms
427,160 KB |
testcase_12 | AC | 1,649 ms
443,444 KB |
testcase_13 | AC | 1,627 ms
447,892 KB |
testcase_14 | AC | 1,523 ms
436,784 KB |
testcase_15 | AC | 1,672 ms
444,516 KB |
testcase_16 | AC | 1,520 ms
434,468 KB |
testcase_17 | AC | 1,704 ms
450,648 KB |
testcase_18 | AC | 1,513 ms
440,512 KB |
testcase_19 | AC | 1,504 ms
438,504 KB |
testcase_20 | AC | 1,570 ms
441,012 KB |
testcase_21 | AC | 1,704 ms
450,680 KB |
testcase_22 | AC | 1,579 ms
437,256 KB |
testcase_23 | AC | 1,762 ms
452,164 KB |
testcase_24 | AC | 1,776 ms
466,684 KB |
testcase_25 | AC | 1,732 ms
466,788 KB |
testcase_26 | AC | 1,792 ms
466,720 KB |
testcase_27 | AC | 1,788 ms
466,676 KB |
testcase_28 | AC | 1,809 ms
466,776 KB |
testcase_29 | AC | 1,683 ms
466,944 KB |
testcase_30 | AC | 1,753 ms
466,740 KB |
testcase_31 | AC | 1,670 ms
466,428 KB |
testcase_32 | AC | 1,689 ms
466,376 KB |
testcase_33 | AC | 1,710 ms
466,504 KB |
testcase_34 | AC | 1,735 ms
466,268 KB |
testcase_35 | AC | 34 ms
52,696 KB |
testcase_36 | AC | 32 ms
52,812 KB |
testcase_37 | AC | 36 ms
58,120 KB |
testcase_38 | AC | 38 ms
58,360 KB |
testcase_39 | AC | 38 ms
59,256 KB |
testcase_40 | AC | 36 ms
58,112 KB |
testcase_41 | AC | 38 ms
58,708 KB |
testcase_42 | AC | 38 ms
59,476 KB |
testcase_43 | AC | 1,689 ms
466,624 KB |
ソースコード
n = int(input()) s = input() p = 998244353 alptonum = {"?":0,"a":1,"b":2,"c":3,"d":4,"e":5,"f":6,"g":7,"h":8,"i":9,"j":10,"k":11,"l":12,"m":13,"n":14,"o":15,"p":16,"q":17,"r":18,"s":19,"t":20,"u":21,"v":22,"w":23,"x":24,"y":25,"z":26} if n == 1: if s[0] == "?": print("{}".format(26)) else: print("{}".format(1)) exit() dp = [[[0 for k in range(27)] for i in range(27)] for j in range(n+1)] if s[0] == "?": for i in range(1,27): dp[1][0][i] = 1 else: dp[1][0][alptonum[s[0]]] = 1 for i in range(1,n): if s[i] == "?": for j in range(1,27): karisum = 0 for k in range(27): karisum = (karisum + dp[i][k][j]) % p for k in range(1,27): if j != k: dp[i+1][j][k] = (karisum - dp[i][k][j]) % p else: ind = alptonum[s[i]] for j in range(1,27): if j != ind: for k in range(27): if k != ind: dp[i+1][j][ind] = (dp[i+1][j][ind] + dp[i][k][j]) % p ans = 0 for i in range(1,27): for j in range(1,27): ans = (ans + dp[n][i][j]) % p print("{}".format(ans))