#269827 (Java21) No.711 競技レーティング単調増加

• 問題: No.711 競技レーティング単調増加
• ユーザー: uwi
• 提出日時: 2018-06-29 23:06:42
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 144 ms / 2,000 ms
• コード長: 4,325 bytes
• コンパイル時間: 4,965 ms
• コンパイル使用メモリ: 80,876 KB
• 実行使用メモリ: 55,088 KB
• 最終ジャッジ日時: 2023-09-13 15:36:28
• 合計ジャッジ時間: 9,685 ms
• ジャッジサーバーID （参考情報）: judge14 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	43 ms; 49,208 KB
testcase_01	AC	42 ms; 49,460 KB
testcase_02	AC	42 ms; 49,228 KB
testcase_03	AC	43 ms; 49,148 KB
testcase_04	AC	43 ms; 49,396 KB
testcase_05	AC	42 ms; 49,260 KB
testcase_06	AC	43 ms; 49,100 KB
testcase_07	AC	43 ms; 49,240 KB
testcase_08	AC	43 ms; 49,260 KB
testcase_09	AC	42 ms; 49,344 KB
testcase_10	AC	43 ms; 49,404 KB
testcase_11	AC	43 ms; 49,100 KB
testcase_12	AC	43 ms; 49,160 KB
testcase_13	AC	42 ms; 49,380 KB
testcase_14	AC	43 ms; 49,216 KB
testcase_15	AC	42 ms; 49,280 KB
testcase_16	AC	43 ms; 49,492 KB
testcase_17	AC	43 ms; 49,176 KB
testcase_18	AC	116 ms; 54,216 KB
testcase_19	AC	111 ms; 53,916 KB
testcase_20	AC	121 ms; 54,240 KB
testcase_21	AC	119 ms; 54,332 KB
testcase_22	AC	116 ms; 54,432 KB
testcase_23	AC	120 ms; 54,692 KB
testcase_24	AC	124 ms; 52,560 KB
testcase_25	AC	114 ms; 54,396 KB
testcase_26	AC	118 ms; 54,296 KB
testcase_27	AC	111 ms; 54,300 KB
testcase_28	AC	87 ms; 52,224 KB
testcase_29	AC	89 ms; 52,184 KB
testcase_30	AC	121 ms; 54,224 KB
testcase_31	AC	133 ms; 54,964 KB
testcase_32	AC	134 ms; 53,992 KB
testcase_33	AC	141 ms; 54,660 KB
testcase_34	AC	139 ms; 55,088 KB
testcase_35	AC	144 ms; 54,592 KB
testcase_36	AC	86 ms; 51,928 KB
testcase_37	AC	119 ms; 54,268 KB
testcase_38	AC	111 ms; 52,352 KB
testcase_39	AC	89 ms; 51,956 KB
testcase_40	AC	116 ms; 52,248 KB
testcase_41	AC	43 ms; 49,280 KB
testcase_42	AC	103 ms; 52,124 KB
testcase_43	AC	108 ms; 54,420 KB

ソースコード

package contest180629;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;

public class F3 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni();
		int[] a = na(n);
		
		int[] b = new int[n];
		int p = 0;
		for(int i = 0;i < n;i++){
			if(a[i]-i >= 1){
				b[p++] = a[i]-i;
			}
		}
		
		out.println(p - lis(Arrays.copyOf(b, p)) + (n-p));
	}
	
	public static int lis(int[] in)
	{
		int n = in.length;
		int ret = 0;
		int[] h = new int[n + 1];
		Arrays.fill(h, Integer.MIN_VALUE / 2);
		for(int i = 0;i < n;i++){
			int ind = upperBound(h, 0, ret+1, in[i]);
			h[ind+1] = in[i];
			if(ind >= ret)ret++;
		}
		return ret;
	}
	
	

	
	public static int[] lise(int[] in)
	{
		int n = in.length;
		int ret = 0;
		int[] h = new int[n + 1];
		Arrays.fill(h, Integer.MIN_VALUE / 2);
		int[] rets = new int[n];
		for(int i = 0;i < n;i++){
			int ind = upperBound(h, 0, ret+1, in[i]);
			rets[i] = h[ind] == in[i] ? ind : ind+1;
			h[ind+1] = in[i];
			if(ind >= ret)ret++;
		}
		return rets;
	}
	
	public static int upperBound(int[] a, int v){ return upperBound(a, 0, a.length, v); }
	public static int upperBound(int[] a, int l, int r, int v)
	{
		int low = l-1, high = r;
		while(high-low > 1){
			int h = high+low>>>1;
			if(a[h] <= v){
				low = h;
			}else{
				high = h;
			}
		}
		return low;
	}
	


	
	public static int[] rev(int[] a)
	{
		int[] b = new int[a.length];
		for(int i = 0;i < a.length;i++)b[a.length-1-i] = a[i];
		return b;
	}

	
	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");
//		Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
//			@Override
//			public void run() {
//				long s = System.currentTimeMillis();
//				solve();
//				out.flush();
//				if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//			}
//		};
//		t.start();
//		t.join();
	}
	
	public static void main(String[] args) throws Exception { new F3().run(); }
	
	private byte[] inbuf = new byte[1024];
	public 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))){ // when nextLine, (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 int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		return a;
	}
	
	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[][] nmi(int n, int m) {
		int[][] map = new int[n][];
		for(int i = 0;i < n;i++)map[i] = na(m);
		return map;
	}
	
	private int ni() { return (int)nl(); }
	
	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)); }
}