結果
問題 | No.1646 Avoid Palindrome |
ユーザー | puzneko |
提出日時 | 2021-10-24 23:23:58 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 1,195 bytes |
コンパイル時間 | 318 ms |
コンパイル使用メモリ | 82,464 KB |
実行使用メモリ | 467,348 KB |
最終ジャッジ日時 | 2024-04-10 04:32:01 |
合計ジャッジ時間 | 59,894 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 45 ms
61,416 KB |
testcase_01 | AC | 47 ms
61,924 KB |
testcase_02 | AC | 46 ms
59,940 KB |
testcase_03 | AC | 54 ms
64,032 KB |
testcase_04 | AC | 1,854 ms
444,100 KB |
testcase_05 | AC | 1,781 ms
443,564 KB |
testcase_06 | AC | 1,611 ms
431,000 KB |
testcase_07 | AC | 1,791 ms
443,976 KB |
testcase_08 | AC | 1,805 ms
447,828 KB |
testcase_09 | AC | 1,606 ms
429,148 KB |
testcase_10 | AC | 1,631 ms
438,068 KB |
testcase_11 | AC | 1,595 ms
427,508 KB |
testcase_12 | AC | 1,781 ms
443,384 KB |
testcase_13 | AC | 1,795 ms
447,656 KB |
testcase_14 | AC | 1,667 ms
437,084 KB |
testcase_15 | AC | 1,849 ms
444,448 KB |
testcase_16 | AC | 1,657 ms
434,548 KB |
testcase_17 | AC | 1,868 ms
450,980 KB |
testcase_18 | AC | 1,678 ms
440,012 KB |
testcase_19 | AC | 1,672 ms
438,828 KB |
testcase_20 | AC | 1,682 ms
440,988 KB |
testcase_21 | AC | 1,864 ms
450,712 KB |
testcase_22 | AC | 1,664 ms
437,548 KB |
testcase_23 | AC | 1,873 ms
452,744 KB |
testcase_24 | AC | 1,957 ms
466,680 KB |
testcase_25 | AC | 1,948 ms
466,968 KB |
testcase_26 | AC | 1,942 ms
466,712 KB |
testcase_27 | AC | 1,948 ms
467,348 KB |
testcase_28 | AC | 1,936 ms
466,888 KB |
testcase_29 | AC | 1,840 ms
466,772 KB |
testcase_30 | AC | 1,958 ms
466,608 KB |
testcase_31 | AC | 1,844 ms
466,548 KB |
testcase_32 | AC | 1,844 ms
466,732 KB |
testcase_33 | AC | 1,826 ms
466,456 KB |
testcase_34 | AC | 1,914 ms
465,812 KB |
testcase_35 | RE | - |
testcase_36 | RE | - |
testcase_37 | AC | 41 ms
59,364 KB |
testcase_38 | AC | 41 ms
59,564 KB |
testcase_39 | AC | 41 ms
57,940 KB |
testcase_40 | AC | 41 ms
57,768 KB |
testcase_41 | AC | 41 ms
59,332 KB |
testcase_42 | AC | 42 ms
58,948 KB |
testcase_43 | AC | 1,892 ms
466,796 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[i] == "?": 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))