Submission #1120467

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120467		vjudge1	Palindrome-Free Numbers (BOI13_numbers)	C++17	50.83 / 100	1081 ms	508 KiB

numbers

#include <bits/stdc++.h>
using namespace std;

int main() {

  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);

  int a, b, ans = 0;
  cin >> a >> b;
  for (int n = a; n <= b; n++) {
    string str = to_string(n);
    char ok = true;
    for (size_t i = 0; i < str.size(); i++) {
      for (size_t j = 2; j <= str.size() - i; j++) {
        size_t e = j / 2;
        size_t s1_size = i + e + j % 2;
        for (size_t k = i; k < s1_size; k++) {
          if (str[k] != str[i + i + e + j - k - 2]) {
            break;
          }
          if (k == s1_size - 1) {
            ok = false;
          }
        }
        if (!ok) {
          break;
        }
      }
      if (!ok) {
        break;
      }
    }
    if (ok) {
      ans++;
    }
  }
  cout << ans << '\n';
}

• Subtask 1: 22.5 / 25
• Subtask 2: 28.333333333333332 / 75