Submission #1288562

#	Time	Username	Problem	Language	Result	Execution time	Memory
1288562		Faisal_Saqib	Palindrome-Free Numbers (BOI13_numbers)	C++20	38.33 / 100	1097 ms	588 KiB

numbers

#include <bits/stdc++.h>
using namespace std;
#define ll long long
bool check(ll x)
{
    string s=to_string(x);
    for(int i=0;i<s.size();i++)
    {
      if(i>0 and s[i]==s[i-1])return 0;
      if(i>1 and s[i-2]==s[i])return 0;
    }
    return 1;
}
// set<string> pre[100];
int main()
{
    
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    ios::sync_with_stdio(0);
    cout.tie(0);cin.tie(0);
    ll a,b,cnt=0;
    cin>>a>>b;
    for(ll x=a;x<=b;x++)
    {
        if(check(x))
        {
            cnt++;
        }
    }
    cout<<cnt<<endl;
    return 0;
}

• Subtask 1: 25 / 25
• Subtask 2: 13.3333 / 75