Submission #1294713

#	Time	Username	Problem	Language	Result	Execution time	Memory
1294713		Johan	Palindrome-Free Numbers (BOI13_numbers)	C++20	15.83 / 100	1097 ms	580 KiB

numbers

#include<bits/stdc++.h>
using namespace std;
bool ok(long long x){
  string s = to_string(x);
  int n = s.size();
  for(int i = 0; i < n; i++){
    if(s[i] == s[i + 1] or 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;
    if(i > 100 && i % 10 == (i % 1000) / 100)continue;
    ans += ok(i);
  }
  cout << ans;
}

• Subtask 1: 12.5 / 25
• Subtask 2: 3.3333 / 75