Submission #604256

#	Time	Username	Problem	Language	Result	Execution time	Memory
604256		shezitt	Palindrome-Free Numbers (BOI13_numbers)	C++14	36.67 / 100	1098 ms	332 KiB

numbers

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
typedef long double ld;
#define lcm(a,b) a*b/__gcd(a,b)
#define INF 1000000000
#define pb push_back
#define fst first
#define snd second
#define fast ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define fore(a, b, c) for(int a=b; a<c; ++a)
#define all(x) x.begin(), x.end()
#define dbg(x) cerr << #x << ": " << x  << endl;
#define raya cerr << "=================================" << endl;
const double PI = 3.141592653589793;
const int MOD = 1e9+7;

// 25 points

bool free(string s){
	int n = s.size();
	for(int i=1; i<n; ++i){
		if(s[i] == s[i-1]){
			return 0;
		}
	}
	for(int i=1; i+1<n; ++i){
		if(s[i-1] == s[i+1]){
			return 0;
		}
	}
	return 1;
}

int main(){
	ll a, b, ans = 0;
	cin >> a >> b;
	for(ll i=a; i<=b; ++i){
		ans += free(to_string(i));
	}
	cout << ans;
}

• Subtask 1: 25 / 25
• Subtask 2: 11.666666666666666 / 75