結果
問題 | No.765 ukuku 2 |
ユーザー | 37zigen |
提出日時 | 2020-04-22 03:42:31 |
言語 | Java21 (openjdk 21) |
結果 |
TLE
|
実行時間 | - |
コード長 | 4,160 bytes |
コンパイル時間 | 2,469 ms |
コンパイル使用メモリ | 79,480 KB |
実行使用メモリ | 70,648 KB |
最終ジャッジ日時 | 2024-10-10 00:09:46 |
合計ジャッジ時間 | 10,019 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 57 ms
56,764 KB |
testcase_01 | AC | 57 ms
49,956 KB |
testcase_02 | AC | 56 ms
50,012 KB |
testcase_03 | AC | 55 ms
49,700 KB |
testcase_04 | AC | 55 ms
49,928 KB |
testcase_05 | AC | 55 ms
49,960 KB |
testcase_06 | AC | 56 ms
49,732 KB |
testcase_07 | AC | 56 ms
50,132 KB |
testcase_08 | AC | 55 ms
50,180 KB |
testcase_09 | AC | 65 ms
50,184 KB |
testcase_10 | AC | 56 ms
50,028 KB |
testcase_11 | AC | 57 ms
49,968 KB |
testcase_12 | AC | 57 ms
49,668 KB |
testcase_13 | AC | 58 ms
50,036 KB |
testcase_14 | AC | 61 ms
49,756 KB |
testcase_15 | AC | 62 ms
49,976 KB |
testcase_16 | AC | 60 ms
50,020 KB |
testcase_17 | AC | 67 ms
50,084 KB |
testcase_18 | AC | 71 ms
50,620 KB |
testcase_19 | AC | 63 ms
49,796 KB |
testcase_20 | AC | 66 ms
49,920 KB |
testcase_21 | AC | 73 ms
50,220 KB |
testcase_22 | AC | 72 ms
50,460 KB |
testcase_23 | AC | 78 ms
50,356 KB |
testcase_24 | AC | 73 ms
50,460 KB |
testcase_25 | AC | 70 ms
50,112 KB |
testcase_26 | AC | 96 ms
51,124 KB |
testcase_27 | AC | 95 ms
51,004 KB |
testcase_28 | AC | 95 ms
51,488 KB |
testcase_29 | AC | 94 ms
51,376 KB |
testcase_30 | TLE | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
testcase_48 | -- | - |
testcase_49 | -- | - |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.math.BigInteger; import java.util.Arrays; import java.util.Comparator; import java.util.NoSuchElementException; public class Main { public static void main(String[] args) { new Main().run(); } long pow(long a,long n,long mod) { return n==0?1:(pow(a*a%mod,n/2,mod)*(n%2==1?a:1))%mod; } long inv(long a,long mod) { return pow(a,mod-2,mod); } final long[] MOD= {980000023,980000029,980000033}; // [l,r) long trim(int l,int r,long[] hash,long mod,boolean to_left) { int n=hash.length; if (to_left) return ((r==0?0:hash[r-1])-(l==0?0:hash[l-1])+mod)%mod*inv(pow(3,l,mod),mod)%mod; else return (hash[l]-(r==n?0:hash[r])+mod)%mod*inv(pow(3,n-r,mod),mod)%mod; } int f(int l,int r,long[][] hash0,long[][] hash1){ int n=hash0[0].length; if (l<0||r>=n||l>r) return 0; int ok=0; int ng=Math.min(l+2, (n-1-r)+2); while (ng-ok>1) { int middle=(ok+ng)/2; boolean ret=true; for (int j=0;j<MOD.length;++j) { ret&=trim(l+1-middle,l+1,hash0[j],MOD[j],true)==trim(r,r+middle,hash1[j],MOD[j],false); } if (ret) ok=middle; else ng=middle; } return ok; } void run() { FastScanner sc=new FastScanner(); char[] cs=sc.next().toCharArray(); int n=cs.length; long[][] hash0=new long[MOD.length][n]; long[][] hash1=new long[MOD.length][n]; for (int i=0;i<MOD.length;++i) { long x=1; for (int j=0;j<n;++j) { hash0[i][j]=(j==0?0:hash0[i][j-1])+(int)(cs[j]-'a')*x; hash0[i][j]%=MOD[i]; x=x*3%MOD[i]; } x=1; for (int j=n-1;j>=0;--j) { hash1[i][j]=(j==n-1?0:hash1[i][j+1])+(int)(cs[j]-'a')*x; hash1[i][j]%=MOD[i]; x=x*3%MOD[i]; } } int even=0; int odd=0; for (int i=0;i<n;++i) { int len=f(i,i+1,hash0,hash1); even=Math.max(even, 2*len+2*Math.max(f(i-len-1,i+1+len,hash0,hash1),f(i-len,i+1+len+1,hash0,hash1))); len=f(i,i,hash0,hash1); odd=Math.max(odd, 2*len-1+2*Math.max(f(i-len-1,i+len,hash0,hash1),f(i-len,i+len+1,hash0,hash1))); } if (odd==n) odd-=1; if (even==n) even-=2; System.out.println(Math.max(even, odd)); } void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));} } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { return (int)nextLong(); } }