結果
| 問題 | No.270 next_permutation (1) |
| ユーザー |
 ぴろず
|
| 提出日時 | 2015-08-21 23:50:45 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 172 ms / 2,000 ms |
| コード長 | 5,607 bytes |
| コンパイル時間 | 2,604 ms |
| コンパイル使用メモリ | 79,448 KB |
| 実行使用メモリ | 52,708 KB |
| 最終ジャッジ日時 | 2024-12-18 02:06:03 |
| 合計ジャッジ時間 | 5,118 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 15 |
ソースコード
package no270;import java.io.IOException;import java.io.InputStream;import java.io.PrintWriter;import java.util.Arrays;import java.util.InputMismatchException;import java.util.NoSuchElementException;public class Main {public static void main(String[] args) {IO io = new IO();int n = io.nextInt();int k = io.nextInt();int[] p = io.nextIntArray(n);int[] b = io.nextIntArray(n);if (k == 0) {System.out.println(0);return;}long ans = 0;BIT bit = new BIT(n);for(int i=0;i<n;i++) {bit.accumulate(i, Math.abs(p[i]-b[i]));ans += Math.abs(p[i]-b[i]);}for(int i=1;i<=k-1;i++) {int x = nextPermutation(p);ans += bit.sum(0, x);for(int j=x;j<n;j++) {ans += Math.abs(p[j]-b[j]);bit.set(j, Math.abs(p[j]-b[j]));}}System.out.println(ans);}static int nextPermutation(int[] p) {int x = _nextPermutation(p);if (x == -1) {for(int i=0;i<p.length;i++) {p[i] = i + 1;}return 0;}return x;}static int _nextPermutation(int[] p) {for(int a=p.length-2;a>=0;--a) {if(p[a]<p[a+1]) {for(int b=p.length-1;;--b) {if(p[b]>p[a]) {int l = a;int t = p[a];p[a] = p[b];p[b] = t;for(++a, b=p.length-1;a<b;++a,--b) {t = p[a];p[a] = p[b];p[b] = t;}return l;}}}}return -1;}}/* 0-indexed */class BIT {private int n;private long[] bit;public BIT(int n) {this.n = n;bit = new long[n+1];}public void accumulate(int index,long num) {index++;while(index<=n) {bit[index] += num;index+=index&-index;}}/* [begin , end) */public long sum(int begin,int end) {return sum(end) - sum(begin);}private long sum(int i) {long s = 0;while(i>0) {s+=bit[i];i-=i&-i;}return s;}public long get(int index) {return sum(index,index+1);}public void set(int index,long num) {accumulate(index,num-get(index));}public String toString() {long[] value = new long[n];for(int i=0;i<n;i++) {value[i] = get(i);}return Arrays.toString(value);}}class IO extends PrintWriter {private final InputStream in;private final byte[] buffer = new byte[1024];private int ptr = 0;private int buflen = 0;public IO() { this(System.in);}public IO(InputStream source) { super(System.out); this.in = source;}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 static boolean isNewLine(int c) { return c == '\n' || c == '\r';}public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}public boolean hasNextLine() { while(hasNextByte() && isNewLine(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 char[] nextCharArray(int len) {if (!hasNext()) {throw new NoSuchElementException();}char[] s = new char[len];int i = 0;int b = readByte();while(isPrintableChar(b)) {if (i == len) {throw new InputMismatchException();}s[i++] = (char) b;b = readByte();}return s;}public String nextLine() {if (!hasNextLine()) {throw new NoSuchElementException();}StringBuilder sb = new StringBuilder();int b = readByte();while(!isNewLine(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 char nextChar() {if (!hasNext()) {throw new NoSuchElementException();}return (char) readByte();}public double nextDouble() { return Double.parseDouble(next());}public int[] nextIntArray(int n) { int[] a = new int[n]; for(int i=0;i<n;i++) a[i] = nextInt(); return a;}public long[] nextLongArray(int n) { long[] a = new long[n]; for(int i=0;i<n;i++) a[i] = nextLong(); return a;}public double[] nextDoubleArray(int n) { double[] a = new double[n]; for(int i=0;i<n;i++) a[i] = nextDouble(); return a;}public void nextIntArrays(int[]... a) { for(int i=0;i<a[0].length;i++) for(int j=0;j<a.length;j++) a[j][i] = nextInt();}public int[][] nextIntMatrix(int n,int m) { int[][] a = new int[n][]; for(int i=0;i<n;i++) a[i] = nextIntArray(m); return a;}public char[][] nextCharMap(int n,int m) { char[][] a = new char[n][]; for(int i=0;i<n;i++) a[i] = nextCharArray(m); return a;}public void close() { super.close(); try {in.close();} catch (IOException e) {}}}