Submission #1120773

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120773		vjudge1	Palindrome-Free Numbers (BOI13_numbers)	C++17	38.33 / 100	1088 ms	512 KiB

numbers

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long long
#define INF 1000000000
bool check(string a){
    bool can = 1;
    int n = a.size();
    for (int i = 0; i < n - 1; i++){
        if (a[i] == a[i + 1]) can = 0;
    }
    for (int i = 1; i < n - 1; i++){
        if (a[i - 1] == a[i + 1]) can = 0;
    }
    return can;
}
int main(){
    ll a, b, ans = 0;
    cin>>a>>b;
    for (ll i = a; i <= b; i++){
        if (check(to_string(i))) ans++;
    }
    cout<<ans;
}

• Subtask 1: 25 / 25
• Subtask 2: 13.333333333333334 / 75