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답안 #1016329

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1016329 2024-07-07T19:35:20 Z delwar_03_ Palindrome-Free Numbers (BOI13_numbers) C++17
100 / 100
 1 ms 604 KB 
#include <bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
const int mod = 1e9 + 7;
const int N = 1e5 + 10;

int dp[20][12][12][2][2]; // (ind, prv, cur, tight, started)

void solve() {
    int l, r; cin>>l>>r;
    string s;

    function<int(int, int, int, int, int)> magic = [&] (int ind, int prv, int cur, int tight, int started) {
        if(ind == s.size()) return 1LL;

        int &ans = dp[ind][prv][cur][tight][started];
        if(~ans) return ans;

        ans = 0;
        int mx = tight ? s[ind] - '0' : 9;

        for(int i = 0; i <= mx; i++) {
            if(i == 0 && !started) {
                ans += magic(ind + 1, prv, cur, tight & (i == mx), 0);
            } else if(i != prv && i != cur) {
                ans += magic(ind + 1, cur, i, tight & (i == mx), 1);
            }
        }

        return ans;
    };


    auto cnt = [&] (int n) {
        s = to_string(n);
        int ans = 0;
        memset(dp, -1, sizeof dp);
        ans += magic(0, 10, 10, 1, 0);
        return ans;
    };

    cout<<cnt(r) - cnt(l - 1)<<endl;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    int t = 1, c = 1; //cin>>t;
    while(t--) {
        // cerr<<"Case "<<c++<<": \n";
        solve();
    }
}

/*
i/p: 
o/p: 
*/

Compilation message

numbers.cpp: In lambda function:
numbers.cpp:15:16: 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]
   15 |         if(ind == s.size()) return 1LL;
      |            ~~~~^~~~~~~~~~~
numbers.cpp: In function 'int main()':
numbers.cpp:51:16: warning: unused variable 'c' [-Wunused-variable]
   51 |     int t = 1, c = 1; //cin>>t;
      |                ^

Subtask #1
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #2
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 460 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct