답안 #77193

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
77193	2018-09-24T01:04:03 Z	FutymyClone	Palindrome-Free Numbers (BOI13_numbers)	C++14	80 / 100	3 ms	1008 KB

numbers

#include <bits/stdc++.h>

using namespace std;

long long dp[20][2][2][10][10];
string a, b;

long long solve (int pos, bool low, bool high, int last, int prevlast, bool nonzero) {
    if (pos == a.length()) return 1;
    long long &ans = dp[pos][low][high][last][prevlast];
    if (ans != -1) return ans;

    ans = 0;
    int l = 0, r = 9;
    if (low) l = a[pos] - '0';
    if (high) r = b[pos] - '0';

    for (int i = l; i <= r; i++) {
        bool newlow = 0;
        bool newhigh = 0;
        if (low && i == l) newlow = 1;
        if (high && i == r) newhigh = 1;

        if (!nonzero) {
            if (i == 0) ans += solve(pos + 1, newlow, newhigh, last, prevlast, nonzero);
            else if (i != last && i != prevlast) ans += solve(pos + 1, newlow, newhigh, i, last, true);
        }
        else if (i != last && i != prevlast) ans += solve(pos + 1, newlow, newhigh, i, last, true);
    }

    return ans;
}

int main(){
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> a >> b;
    while (a.length() < b.length()) a = "0" + a;
    while (b.length() < a.length()) b = "0" + b;
    memset(dp, -1, sizeof(dp));
    cout << solve(0, 1, 1, -1, -1, 0);
    return 0;
}

Compilation message

numbers.cpp: In function 'long long int solve(int, bool, bool, int, int, bool)':
numbers.cpp:9:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (pos == a.length()) return 1;
         ~~~~^~~~~~~~~~~~~

Subtask #1

20.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	544 KB	Output is correct
3	Correct	2 ms	592 KB	Output is correct
4	Incorrect	2 ms	592 KB	Output isn't correct
5	Correct	2 ms	592 KB	Output is correct
6	Correct	2 ms	696 KB	Output is correct
7	Correct	2 ms	696 KB	Output is correct
8	Correct	2 ms	696 KB	Output is correct
9	Correct	2 ms	696 KB	Output is correct
10	Correct	2 ms	696 KB	Output is correct
11	Correct	2 ms	696 KB	Output is correct
12	Correct	2 ms	696 KB	Output is correct
13	Correct	3 ms	696 KB	Output is correct
14	Incorrect	2 ms	696 KB	Output isn't correct
15	Incorrect	2 ms	696 KB	Output isn't correct
16	Correct	2 ms	696 KB	Output is correct
17	Correct	2 ms	700 KB	Output is correct
18	Correct	2 ms	704 KB	Output is correct
19	Correct	2 ms	768 KB	Output is correct
20	Incorrect	2 ms	768 KB	Output isn't correct

Subtask #2

60.0 / 75.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	768 KB	Output is correct
2	Correct	2 ms	768 KB	Output is correct
3	Correct	2 ms	768 KB	Output is correct
4	Correct	2 ms	768 KB	Output is correct
5	Incorrect	2 ms	768 KB	Output isn't correct
6	Correct	2 ms	768 KB	Output is correct
7	Incorrect	2 ms	768 KB	Output isn't correct
8	Incorrect	2 ms	768 KB	Output isn't correct
9	Incorrect	2 ms	808 KB	Output isn't correct
10	Incorrect	2 ms	864 KB	Output isn't correct
11	Correct	2 ms	864 KB	Output is correct
12	Incorrect	2 ms	864 KB	Output isn't correct
13	Incorrect	3 ms	864 KB	Output isn't correct
14	Incorrect	2 ms	864 KB	Output isn't correct
15	Incorrect	2 ms	864 KB	Output isn't correct
16	Correct	2 ms	864 KB	Output is correct
17	Correct	2 ms	864 KB	Output is correct
18	Correct	2 ms	864 KB	Output is correct
19	Correct	2 ms	864 KB	Output is correct
20	Correct	2 ms	864 KB	Output is correct
21	Correct	2 ms	864 KB	Output is correct
22	Correct	2 ms	864 KB	Output is correct
23	Correct	2 ms	872 KB	Output is correct
24	Correct	2 ms	940 KB	Output is correct
25	Correct	2 ms	940 KB	Output is correct
26	Correct	2 ms	940 KB	Output is correct
27	Correct	2 ms	940 KB	Output is correct
28	Correct	2 ms	940 KB	Output is correct
29	Correct	2 ms	964 KB	Output is correct
30	Correct	2 ms	964 KB	Output is correct
31	Correct	2 ms	964 KB	Output is correct
32	Correct	2 ms	964 KB	Output is correct
33	Correct	2 ms	964 KB	Output is correct
34	Correct	2 ms	964 KB	Output is correct
35	Correct	2 ms	964 KB	Output is correct
36	Correct	2 ms	964 KB	Output is correct
37	Correct	2 ms	964 KB	Output is correct
38	Correct	2 ms	964 KB	Output is correct
39	Correct	2 ms	964 KB	Output is correct
40	Correct	2 ms	964 KB	Output is correct
41	Correct	2 ms	964 KB	Output is correct
42	Correct	2 ms	964 KB	Output is correct
43	Correct	2 ms	1008 KB	Output is correct
44	Correct	2 ms	1008 KB	Output is correct
45	Correct	2 ms	1008 KB	Output is correct