Submission #564194

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
564194	2022-05-18T17:32:30 Z	SSRS	Palindrome-Free Numbers (BOI13_numbers)	C++14	100 / 100	1 ms	348 KB

numbers

#include <bits/stdc++.h>
using namespace std;
long long solve(long long N){
  string S = to_string(N);
  int L = S.size();
  vector<vector<vector<vector<long long>>>> dp(L + 1, vector<vector<vector<long long>>>(2, vector<vector<long long>>(10, vector<long long>(10, 0))));
  dp[L][1][0][0] = 1;
  long long ans = 0;
  if (N > 0){
    ans++;
  }
  for (int i = L; i >= 0; i--){
    for (int j = 0; j < 2; j++){
      for (int k = 0; k < 10; k++){
        for (int l = 0; l < 10; l++){
          if (!(i == 0 && j == 1) && l > 0){
            ans += dp[i][j][k][l];
          }
          if (i > 0){
            for (int m = 0; m < 10; m++){
              bool ok = true;
              if (i < L && m == l){
                ok = false;
              }
              if (i < L - 1 && m == k){
                ok = false;
              }
              if (ok){
                int j2 = j;
                if (m > S[i - 1] - '0'){
                  j2 = 1;
                } else if (m < S[i - 1] - '0'){
                  j2 = 0;
                }
                dp[i - 1][j2][l][m] += dp[i][j][k][l];
              }
            }
          }
        }
      }
    }
  }
  return ans;
}
int main(){
  long long a, b;
  cin >> a >> b;
  cout << solve(b + 1) - solve(a) << endl;
}

Subtask #1

25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	300 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	300 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	296 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	296 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct

Subtask #2

75.0 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	296 KB	Output is correct
8	Correct	1 ms	304 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	296 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	340 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	1 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	1 ms	304 KB	Output is correct
41	Correct	1 ms	292 KB	Output is correct
42	Correct	1 ms	340 KB	Output is correct
43	Correct	1 ms	340 KB	Output is correct
44	Correct	1 ms	340 KB	Output is correct
45	Correct	1 ms	340 KB	Output is correct