結果
問題 | No.599 回文かい |
ユーザー | uafr_cs |
提出日時 | 2017-11-24 23:30:17 |
言語 | Java (openjdk 23) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,257 bytes |
コンパイル時間 | 2,067 ms |
コンパイル使用メモリ | 78,184 KB |
実行使用メモリ | 62,624 KB |
最終ジャッジ日時 | 2024-11-27 08:23:51 |
合計ジャッジ時間 | 26,875 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 117 ms
61,100 KB |
testcase_01 | AC | 117 ms
46,472 KB |
testcase_02 | AC | 122 ms
62,624 KB |
testcase_03 | AC | 117 ms
46,560 KB |
testcase_04 | AC | 127 ms
60,960 KB |
testcase_05 | AC | 141 ms
46,260 KB |
testcase_06 | AC | 121 ms
41,056 KB |
testcase_07 | AC | 125 ms
41,228 KB |
testcase_08 | AC | 124 ms
41,392 KB |
testcase_09 | AC | 132 ms
41,012 KB |
testcase_10 | AC | 175 ms
41,468 KB |
testcase_11 | AC | 174 ms
41,480 KB |
testcase_12 | AC | 253 ms
41,224 KB |
testcase_13 | AC | 361 ms
42,936 KB |
testcase_14 | TLE | - |
testcase_15 | AC | 1,285 ms
46,768 KB |
testcase_16 | TLE | - |
testcase_17 | TLE | - |
testcase_18 | AC | 121 ms
41,236 KB |
testcase_19 | AC | 124 ms
41,224 KB |
testcase_20 | AC | 124 ms
41,012 KB |
evil_0.txt | TLE | - |
ソースコード
import java.util.Arrays; import java.util.LinkedList; import java.util.Scanner; public class Main { public static long P1 = 1298719; public static long P2 = 961151; public static long MOD = 1000000007; public static long[] rolling_hash1(char[] ins){ long[] hash = new long[ins.length + 1]; hash[0] = 0; for(int i = 1; i <= ins.length; i++){ hash[i] = hash[i - 1] * P1; hash[i] %= MOD; hash[i] += ins[i - 1]; hash[i] %= MOD; } return hash; } public static long[] rolling_hash2(char[] ins){ long[] hash = new long[ins.length + 1]; hash[0] = 0; for(int i = 1; i <= ins.length; i++){ hash[i] = hash[i - 1] * P2; hash[i] %= MOD; hash[i] += ins[i - 1]; hash[i] %= MOD; } return hash; } public static long mod_pow(long a, long p){ if(p == 0){ return 1; } if(p == 1){ return a % MOD; } if(p % 2 == 1){ return (mod_pow(a, p - 1) * a) % MOD; }else{ final long ret = mod_pow(a, p / 2) % MOD; return (ret * ret) % MOD; } } public static long calc_hash1(long[] hash, int begin, int end){ final long from_end = hash[end]; final long from_begin = (hash[begin] * mod_pow(P1, (end - begin))) % MOD; return (MOD + (from_end - from_begin)) % MOD; } public static long calc_hash2(long[] hash, int begin, int end){ final long from_end = hash[end]; final long from_begin = (hash[begin] * mod_pow(P2, (end - begin))) % MOD; return (MOD + (from_end - from_begin)) % MOD; } public static long dfs(int offset, char[] ins, long[] memo, long[] hash1, long[] hash2){ if(memo[offset] >= 0){ return memo[offset]; } long ret = 1; LOOP: for(int len = 1; ;len++){ final int fst_begin = offset; final int snd_end = ins.length - offset; final int snd_begin = snd_end - len; final int fst_end = fst_begin + len; if(fst_end > snd_begin){ break; } /* System.out.println(fst_begin + " " + snd_begin + " " + len); System.out.println("[" + fst_begin + ", " + fst_end + "]"); //*/ /* for(int i = 0; i < len; i++){ final int fst = fst_begin + i; final int snd = snd_begin + i; if(ins[fst] != ins[snd]){ continue LOOP; } } //*/ final long fst_hash1 = calc_hash1(hash1, fst_begin, fst_end); final long snd_hash1 = calc_hash1(hash1, snd_begin, snd_end); final long fst_hash2 = calc_hash2(hash2, fst_begin, fst_end); final long snd_hash2 = calc_hash2(hash2, snd_begin, snd_end); //System.out.println(fst_hash1 + " " + snd_hash1); if(fst_hash1 != snd_hash1){ continue; } if(fst_hash2 != snd_hash2){ continue; } //System.out.println(offset + " " + fst_begin + " " + snd_begin + " " + len); ret += dfs(offset + len, ins, memo, hash1, hash2); ret %= MOD; } return memo[offset] = ret; } public static void main(final String[] args){ new Thread(null, new Runnable(){ @Override public void run() { _main(args); } }, "", 100 * 1024 * 1024).start(); } public static void _main(String[] args) { Scanner sc = new Scanner(System.in); final char[] ins = sc.next().toCharArray(); long[] memo = new long[ins.length]; Arrays.fill(memo, -1); System.out.println(dfs(0, ins, memo, rolling_hash1(ins), rolling_hash2(ins))); } }