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Submission #522416

# Submission time Handle Problem Language Result Execution time Memory
522416 2022-02-04T23:11:15 Z Hamed5001 Palindrome-Free Numbers (BOI13_numbers) C++14
100 / 100
 1 ms 332 KB 
#include <bits/stdc++.h>
using namespace std;

long long dp[20][11][11][2][2];

long long fun(int idx, string &s, pair<int, int> last, bool lz, bool sm) {
    if (idx == s.size()) return 1;
    
    auto &ret = dp[idx][last.first][last.second][lz][sm];
    if (~ret) return ret;
    
    ret = 0;
    if (lz) ret += fun(idx + 1, s, last, 1, 1);
    for (int i = 0; i < 10; ++i) {
        if (lz && i == 0) continue;
        if (i == last.first || i == last.second) continue;
    
        if (i > s[idx] - '0' && sm) {
           
            ret += fun(idx + 1, s, {i, last.first}, 0, sm);
        }
        else if (i == s[idx] - '0') {
            ret += fun(idx + 1, s, {i, last.first}, 0, sm);
        }
        else if (i < s[idx] - '0') {
            ret += fun(idx + 1, s, {i, last.first}, 0, 1);
        }
    }
    return ret;
}

long long calc(long long limit) {
    if (limit < 0) return 0;
    string s = to_string(limit);
    memset(dp, -1, sizeof dp);
    return fun(0, s, {10, 10}, 1, 0);
}

void solve() {
    long long l, r;
    cin >> l >> r;
    cout << calc(r) - calc(l - 1);
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	solve();
	return 0;
}

Compilation message

numbers.cpp: In function 'long long int fun(int, std::string&, std::pair<int, int>, bool, bool)':
numbers.cpp:7:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     if (idx == s.size()) return 1;
      |         ~~~~^~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 0 ms 312 KB Output is correct
17 Correct 0 ms 316 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #2
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 308 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 296 KB Output is correct
32 Correct 1 ms 316 KB Output is correct
33 Correct 1 ms 312 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 320 KB Output is correct
39 Correct 1 ms 312 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 320 KB Output is correct
42 Correct 1 ms 320 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct