Submission #230671

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
230671	2020-05-11T02:34:17 Z	box_of_donuts	Palindrome-Free Numbers (BOI13_numbers)	Java 11	73.75 / 100	89 ms	11132 KB

numbers

import java.util.*;
import java.io.*;

public class numbers {
  private static String a, b;
  private static Long[][][][][] dp;
  
  private static long palRange(int i, int lst1, int lst2, int blo, int bhi) {
    if (dp[i][lst1+1][lst2+1][blo][bhi] != null) return dp[i][lst1+1][lst2+1][blo][bhi];
    if (i == a.length()) return dp[i][lst1+1][lst2+1][blo][bhi] = 1L;
    long ret = 0;
    for (int k = 0; k <= 9; k++) {
      if (k == lst1 || k == lst2) continue;
      if (blo == 1 && k < (a.charAt(i) - '0') || bhi == 1 && k > (b.charAt(i) - '0')) continue;
      ret += palRange(i+1, k, lst1, blo == 1 && k == (a.charAt(i) - '0') ? 1 : 0, 
                      bhi == 1 && k == (b.charAt(i) - '0') ? 1 : 0);
    }
    return dp[i][lst1+1][lst2+1][blo][bhi] = ret;
  }
  
  public static void main(String[] args) throws IOException { 
	BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
    StringTokenizer ST = new StringTokenizer(in.readLine()); 
    a = ST.nextToken(); 
    b = ST.nextToken(); 
    
    while (a.length() < b.length()) a = "0" + a;
    dp = new Long[a.length()+1][11][11][2][2];
    long ans = palRange(0, -1, -1, 1, 1);
    out.println(ans);
  
    in.close();
    out.close();
  }
}

Subtask #1

13.75 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	76 ms	10224 KB	Output isn't correct
2	Incorrect	77 ms	10604 KB	Output isn't correct
3	Correct	84 ms	10868 KB	Output is correct
4	Incorrect	84 ms	10744 KB	Output isn't correct
5	Correct	80 ms	10536 KB	Output is correct
6	Incorrect	79 ms	10432 KB	Output isn't correct
7	Incorrect	77 ms	10144 KB	Output isn't correct
8	Incorrect	80 ms	10264 KB	Output isn't correct
9	Correct	81 ms	10360 KB	Output is correct
10	Correct	78 ms	10236 KB	Output is correct
11	Correct	80 ms	10392 KB	Output is correct
12	Correct	77 ms	10360 KB	Output is correct
13	Correct	80 ms	10104 KB	Output is correct
14	Incorrect	86 ms	10616 KB	Output isn't correct
15	Incorrect	81 ms	10720 KB	Output isn't correct
16	Correct	81 ms	10604 KB	Output is correct
17	Correct	81 ms	10616 KB	Output is correct
18	Correct	77 ms	10348 KB	Output is correct
19	Correct	82 ms	10744 KB	Output is correct
20	Incorrect	78 ms	10744 KB	Output isn't correct

Subtask #2

60.0 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	83 ms	10764 KB	Output is correct
2	Correct	84 ms	10776 KB	Output is correct
3	Correct	82 ms	10868 KB	Output is correct
4	Correct	82 ms	10740 KB	Output is correct
5	Incorrect	84 ms	10612 KB	Output isn't correct
6	Correct	86 ms	11000 KB	Output is correct
7	Incorrect	86 ms	10696 KB	Output isn't correct
8	Incorrect	86 ms	10872 KB	Output isn't correct
9	Incorrect	86 ms	10616 KB	Output isn't correct
10	Incorrect	81 ms	10616 KB	Output isn't correct
11	Correct	78 ms	10856 KB	Output is correct
12	Incorrect	83 ms	10748 KB	Output isn't correct
13	Incorrect	83 ms	10772 KB	Output isn't correct
14	Incorrect	82 ms	10744 KB	Output isn't correct
15	Incorrect	82 ms	10872 KB	Output isn't correct
16	Correct	83 ms	10776 KB	Output is correct
17	Correct	82 ms	10504 KB	Output is correct
18	Correct	82 ms	10628 KB	Output is correct
19	Correct	83 ms	10360 KB	Output is correct
20	Correct	80 ms	10612 KB	Output is correct
21	Correct	85 ms	10756 KB	Output is correct
22	Correct	80 ms	10744 KB	Output is correct
23	Correct	85 ms	10772 KB	Output is correct
24	Correct	81 ms	10616 KB	Output is correct
25	Correct	86 ms	10868 KB	Output is correct
26	Correct	85 ms	10788 KB	Output is correct
27	Correct	82 ms	10872 KB	Output is correct
28	Correct	88 ms	11132 KB	Output is correct
29	Correct	83 ms	10612 KB	Output is correct
30	Correct	78 ms	10744 KB	Output is correct
31	Correct	82 ms	10872 KB	Output is correct
32	Correct	77 ms	10616 KB	Output is correct
33	Correct	84 ms	10868 KB	Output is correct
34	Correct	79 ms	10556 KB	Output is correct
35	Correct	85 ms	10612 KB	Output is correct
36	Correct	89 ms	10744 KB	Output is correct
37	Correct	84 ms	10576 KB	Output is correct
38	Correct	84 ms	10740 KB	Output is correct
39	Correct	84 ms	10776 KB	Output is correct
40	Correct	81 ms	10488 KB	Output is correct
41	Correct	83 ms	10772 KB	Output is correct
42	Correct	80 ms	10612 KB	Output is correct
43	Correct	85 ms	11016 KB	Output is correct
44	Correct	85 ms	10900 KB	Output is correct
45	Correct	86 ms	10988 KB	Output is correct