답안 #1121061

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1121061	2024-11-28T11:15:39 Z	AtabayRajabli	Palindrome-Free Numbers (BOI13_numbers)	C++17	100 / 100	2 ms	508 KB

numbers

#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define int long long
using namespace std;

const int sz = 20;
int dp[sz][sz][sz][2];
string s;

int f(int ind, int prv, int prv2, bool same)
{
    if(dp[ind][prv][prv2][same] != -1) return dp[ind][prv][prv2][same];
    if(ind == s.size()) return 1;
    int ans = 0;
    for(int i = 0; i <= 9; i++)
    {
        if((i > s[ind] - '0' && same) || i == prv || i == prv2) continue;
        int val = i;
        if(prv == 10 && i == 0) val = 10;
        if(i == s[ind] - '0')
        {
            ans += f(ind + 1, val, prv, same);
        }
        else
        {
            if(same) 
            {
                if(s[ind] - '0' > i) ans += f(ind + 1, val, prv, !same);
            }
            else
            {
                ans += f(ind + 1, val, prv, same);
            }
        }
    }
    return dp[ind][prv][prv2][same] = ans;
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    

    int l, r;
    cin >> l >> r;

    memset(dp, -1, sizeof(dp));
    s = to_string(r);
    r = f(0, 10, 10, 1);

    if(l > 0)
    {
        memset(dp, -1, sizeof(dp));
        s = to_string(l - 1);
        l = f(0, 10, 10, 1);
    }

    cout << r - l;
}  

Compilation message

numbers.cpp: In function 'long long int f(long long int, long long int, long long int, bool)':
numbers.cpp:13:12: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     if(ind == s.size()) return 1;
      |        ~~~~^~~~~~~~~~~

Subtask #1

25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	336 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	336 KB	Output is correct
11	Correct	1 ms	336 KB	Output is correct
12	Correct	1 ms	508 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	1 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	1 ms	336 KB	Output is correct
18	Correct	1 ms	504 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	336 KB	Output is correct

Subtask #2

75.0 / 75.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	336 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	336 KB	Output is correct
11	Correct	1 ms	424 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	1 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	2 ms	336 KB	Output is correct
18	Correct	1 ms	336 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	336 KB	Output is correct
21	Correct	1 ms	336 KB	Output is correct
22	Correct	1 ms	336 KB	Output is correct
23	Correct	1 ms	336 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	336 KB	Output is correct
26	Correct	1 ms	336 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	336 KB	Output is correct
29	Correct	1 ms	336 KB	Output is correct
30	Correct	2 ms	336 KB	Output is correct
31	Correct	1 ms	336 KB	Output is correct
32	Correct	1 ms	336 KB	Output is correct
33	Correct	1 ms	336 KB	Output is correct
34	Correct	1 ms	336 KB	Output is correct
35	Correct	1 ms	336 KB	Output is correct
36	Correct	1 ms	336 KB	Output is correct
37	Correct	1 ms	336 KB	Output is correct
38	Correct	1 ms	336 KB	Output is correct
39	Correct	1 ms	336 KB	Output is correct
40	Correct	1 ms	336 KB	Output is correct
41	Correct	1 ms	336 KB	Output is correct
42	Correct	1 ms	508 KB	Output is correct
43	Correct	1 ms	336 KB	Output is correct
44	Correct	1 ms	336 KB	Output is correct
45	Correct	1 ms	336 KB	Output is correct