結果
問題 | No.711 競技レーティング単調増加 |
ユーザー |
|
提出日時 | 2018-06-29 23:06:42 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 157 ms / 2,000 ms |
コード長 | 4,325 bytes |
コンパイル時間 | 3,808 ms |
コンパイル使用メモリ | 83,168 KB |
実行使用メモリ | 54,428 KB |
最終ジャッジ日時 | 2024-07-01 00:11:33 |
合計ジャッジ時間 | 9,048 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 41 |
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)); }}