답안 #596919

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
596919	2022-07-15T09:19:55 Z	Hanksburger	Palindrome-Free Numbers (BOI13_numbers)	C++17	100 / 100	1 ms	240 KB

numbers

#include <bits/stdc++.h>
using namespace std;
#define ll long long
ll p[20];
ll f(ll n)
{
    if (n<=9)
        return n+1;
    stringstream ss;
    string s;
    ss << n;
    ss >> s;
    ll len=s.length();
    ll ans=10+81*(p[len-2]-1)/7+(s[0]-'1')*9*p[len-2]+(s[1]-'0'-(s[0]<s[1]))*p[len-2];
    if (s[0]==s[1])
        return ans;
    for (ll i=2; i<len; i++)
    {
        ans+=max(0, s[i]-'0'-(s[i-1]<s[i])-(s[i-2]<s[i]))*p[len-i-1];
        if (s[i-1]==s[i] || s[i-2]==s[i])
            return ans;
    }
    return ans+1;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    p[0]=1;
    for (ll i=1; i<20; i++)
        p[i]=p[i-1]*8;
    ll a, b;
    cin >> a >> b;
    cout << f(b)-f(a-1);
    return 0;
}

Subtask #1

25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 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	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #2

75.0 / 75.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	216 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	240 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	0 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	0 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	0 ms	212 KB	Output is correct
42	Correct	0 ms	212 KB	Output is correct
43	Correct	1 ms	212 KB	Output is correct
44	Correct	1 ms	212 KB	Output is correct
45	Correct	0 ms	212 KB	Output is correct