結果

問題 No.366 ロボットソート
ユーザー yuya178yuya178
提出日時 2017-11-11 18:14:56
言語 Java21
(openjdk 21)
結果
WA  
実行時間 -
コード長 4,402 bytes
コンパイル時間 2,929 ms
コンパイル使用メモリ 83,164 KB
実行使用メモリ 38,240 KB
最終ジャッジ日時 2024-05-03 16:42:39
合計ジャッジ時間 4,617 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge4
このコードへのチャレンジ
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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 43 ms
37,216 KB
testcase_01 AC 48 ms
37,100 KB
testcase_02 AC 50 ms
36,976 KB
testcase_03 AC 47 ms
36,920 KB
testcase_04 AC 46 ms
36,748 KB
testcase_05 AC 46 ms
37,100 KB
testcase_06 AC 46 ms
36,920 KB
testcase_07 AC 45 ms
37,144 KB
testcase_08 AC 47 ms
36,956 KB
testcase_09 AC 45 ms
36,636 KB
testcase_10 AC 45 ms
36,704 KB
testcase_11 AC 47 ms
37,084 KB
testcase_12 AC 47 ms
36,884 KB
testcase_13 AC 45 ms
37,144 KB
testcase_14 AC 45 ms
37,120 KB
testcase_15 AC 46 ms
37,092 KB
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 AC 48 ms
37,160 KB
testcase_21 AC 51 ms
36,732 KB
testcase_22 AC 71 ms
38,240 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;
import java.math.*;
import java.awt.Point;

public class Main {
    InputStream is;
    PrintWriter out;
    String INPUT = "";

    long MOD = 1_000_000_007;
    int inf = 10000000;
    
    void solve()
    {
        int n = ni();
        int k = ni();
        int[] a = new int[n];
        int[] b = new int[n];
        HashMap<Integer,Integer> map = new HashMap<>();
        for(int i = 0; i < n; i++){
            a[i] = ni();
            map.put(a[i],i);
        }
        Arrays.sort(a);
        for(int i = 0; i < n; i++){
            int j = map.get(a[i]);
            b[i] = j;
        }
        long ans = 0;
        for(int i = 0; i < n; i++){
            int j = b[i];
            while(j-k>=i){
                int tmp = b[j];
                b[j] = b[j-k];
                b[j-k] = tmp;
                j -= k;
                ans ++;
            }
            if(j!=i){
                out.println(-1);
                return;
            }
        }
        out.println(ans);
    }

    void run() throws Exception
    {
        is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
        out = new PrintWriter(System.out);
        
        long s = System.currentTimeMillis();
        solve();
        out.flush();
        if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
    }
    
    public static void main(String[] args) throws Exception { new Main().run(); }
    
    private byte[] inbuf = new byte[1024];
    private int lenbuf = 0, ptrbuf = 0;
    
    private int readByte()
    {
        if(lenbuf == -1)throw new InputMismatchException();
        if(ptrbuf >= lenbuf){
            ptrbuf = 0;
            try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
            if(lenbuf <= 0)return -1;
        }
        return inbuf[ptrbuf++];
    }
    
    private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
    private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
    
    private double nd() { return Double.parseDouble(ns()); }
    private char nc() { return (char)skip(); }
    
    private String ns()
    {
        int b = skip();
        StringBuilder sb = new StringBuilder();
        while(!(isSpaceChar(b) && b != ' ')){
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    
    private char[] ns(int n)
    {
        char[] buf = new char[n];
        int b = skip(), p = 0;
        while(p < n && !(isSpaceChar(b))){
            buf[p++] = (char)b;
            b = readByte();
        }
        return n == p ? buf : Arrays.copyOf(buf, p);
    }
    
    private char[][] nm(int n, int m)
    {
        char[][] map = new char[n][];
        for(int i = 0;i < n;i++)map[i] = ns(m);
        return map;
    }
    
    private int[] na(int n)
    {
        int[] a = new int[n];
        for(int i = 0;i < n;i++)a[i] = ni();
        return a;
    }
    
    private int ni()
    {
        int num = 0, b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private long nl()
    {
        long num = 0;
        int b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }

    static class ArrayUtils {
        public static void fill(double[][] array, double value) {
            for (double[] a : array) Arrays.fill(a, value);
        }
 
        public static void fill(double[][][] array, double value) {
            for (double[][] l : array) fill(l, value);
        } 
    }
}
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