제출 #1294717

#제출 시각아이디문제언어결과실행 시간메모리
1294717JohanPalindrome-Free Numbers (BOI13_numbers)C++20
38.33 / 100
1097 ms584 KiB
#include<bits/stdc++.h>
using namespace std;
bool ok(long long x){
  string s = to_string(x);
  for(int i = 0; i < s.size() - 1; i++){
    if(s[i] == s[i + 1] or i < s.size() - 2 && s[i] == s[i + 2])
      return false;
  }
  return true;
}
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long a, b, ans = 0;
  cin >> a >> b;
  for(long long i = a; i <= b; i++){
    // if(i < 10)continue;
    // if(i % 10 == (i % 100) / 10)continue;
    ans += ok(i);
  }
  cout << ans;
}
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