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Submission #779121

# Submission time Handle Problem Language Result Execution time Memory
779121 2023-07-11T08:05:00 Z adaawf Palindrome-Free Numbers (BOI13_numbers) C++14
100 / 100
 1 ms 468 KB 
#include <iostream>
#include <cstring>
using namespace std;
string tostring(long long int a) {
    if (a == 0) return "0";
    string res = "";
    while (a != 0) {
        res = char(a % 10 + 48) + res;
        a /= 10;
    }
    return res;
}
long long int f[25][2][15][15][2];
long long int trya(string s, int i, int smaller, int x, int y, int flag) {
    if (i == s.size()) {
        return 1;
    }
    if (f[i][smaller][x][y][flag] != -1) return f[i][smaller][x][y][flag];
    long long int h = 9, res = 0;
    if (smaller == 0) h = s[i] - '0';
    for (int j = 0; j <= h; j++) {
        int ff = 0;
        if (j == x || j == y) continue;
        if (j == 0) ff = flag;
        else ff = 1;
        res += trya(s, i + 1, smaller | (j != h), (ff == 0) ? 10 : j, x, ff);
    }
    //cout << i << " " << smaller << " " << x << " " << y << " " << res << endl;
    f[i][smaller][x][y][flag] = res;
    return res;
}
int main() {
    long long int l, r;
    cin >> l >> r;
    l--;
    memset(f, -1, sizeof f);
    string s = tostring(r);
    long long int h = trya(s, 0, 0, 10, 10, 0), k;
    if (l < 0) {
        k = 0;
    }
    else {
        memset(f, -1, sizeof f);
        string t = tostring(l);
        k = trya(t, 0, 0, 10, 10, 0);
    }
    cout << h - k;
}

Compilation message

numbers.cpp: In function 'long long int trya(std::string, int, int, int, int, int)':
numbers.cpp:15:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     if (i == s.size()) {
      |         ~~^~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct

Subtask #2
75.0 / 75.0

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