Submission #1179911

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Source Code Expand

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] c = new int[N];
    for(int i = 0; i < N; i++) {
      c[i] = sc.nextInt();
    }
    // LIS
    int[] lis = new int[N + 1];
    lis[0] = -100;
    for(int i = 1; i < N + 1; i++) {
      lis[i] = Integer.MAX_VALUE; 
    }
    for(int i = 0; i < N; i++) {
      int l = 1;
      int r = N + 1;
      int length = 0;
      while(l < r) {
        int med = (l + r) / 2;
        if(lis[med] > c[i]) {
          length = med;
          r = med;
        } else {
          l = med + 1;
        }
      }
      lis[length] = c[i]; 
    }
    int maxLength = 0;
    for(int i = N; i > 0; i--) {
      if(lis[i] != Integer.MAX_VALUE) maxLength = i;
    }
    System.out.println(N - maxLength);
  }
}

Submission Info

Judge Result