結果
問題 | No.1171 Runs in Subsequences |
ユーザー | 37zigen |
提出日時 | 2020-08-14 22:42:32 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 237 ms / 2,000 ms |
コード長 | 3,050 bytes |
コンパイル時間 | 2,681 ms |
コンパイル使用メモリ | 78,104 KB |
実行使用メモリ | 44,724 KB |
最終ジャッジ日時 | 2024-10-10 16:04:11 |
合計ジャッジ時間 | 5,796 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 | 52 ms
36,932 KB |
testcase_01 | AC | 52 ms
36,976 KB |
testcase_02 | AC | 51 ms
36,604 KB |
testcase_03 | AC | 52 ms
37,076 KB |
testcase_04 | AC | 53 ms
36,584 KB |
testcase_05 | AC | 52 ms
36,848 KB |
testcase_06 | AC | 52 ms
36,936 KB |
testcase_07 | AC | 52 ms
36,756 KB |
testcase_08 | AC | 53 ms
36,984 KB |
testcase_09 | AC | 52 ms
36,856 KB |
testcase_10 | AC | 54 ms
37,100 KB |
testcase_11 | AC | 55 ms
36,696 KB |
testcase_12 | AC | 55 ms
36,724 KB |
testcase_13 | AC | 55 ms
36,880 KB |
testcase_14 | AC | 55 ms
36,936 KB |
testcase_15 | AC | 203 ms
44,180 KB |
testcase_16 | AC | 201 ms
44,548 KB |
testcase_17 | AC | 201 ms
44,724 KB |
testcase_18 | AC | 200 ms
44,524 KB |
testcase_19 | AC | 230 ms
44,392 KB |
testcase_20 | AC | 237 ms
44,604 KB |
testcase_21 | AC | 219 ms
44,260 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.ArrayDeque; import java.util.Arrays; import java.util.NoSuchElementException; 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;} public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; 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() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next());} } class Main { public static void main(String[] args) { new Main().run(); } final long MOD=(long)1e9+7; void run() { FastScanner sc = new FastScanner(); char[] cs=sc.next().toCharArray(); int N=cs.length; long[] pw2=new long[N+1]; { pw2[0]=1; for (int i=1;i<pw2.length;++i) pw2[i]=2*pw2[i-1]%MOD; } long ans=0; for (int i=0;i<27;++i) { long[] sum1=new long[N]; for (int j=0;j<N;++j) { if (j!=0) sum1[j]=sum1[j-1]; if (cs[j]!=(char)('a'+i)) { sum1[j]+=pw2[j]; sum1[j]%=MOD; } } for (int j=0;j<N;++j) { if (cs[j]!=(char)('a'+i)) { continue; } ans+=(sum1[j]+1)*pw2[N-1-j]%MOD; ans%=MOD; } } System.out.println(ans); } void tr(Object...o) {System.out.println(Arrays.deepToString(o));} }