Vuodet

#include <bits/stdc++.h>
#define F first
#define S second
typedef long long ll;
using namespace std;

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int a,b;
	cin>>a>>b;
	vector<int> ans;
	for (int i=a;i<=b;i++){
		int lol=i*1337;
		string s=to_string(lol);
		string u=to_string(i);
		int t=0;
		for (char c : s){
			if (t==0&&c==u[0]){
				t++;
			} else if (t==1&&c==u[1]){
				t++;
			} else if (t==2&&c==u[2]){
				t++;
			} else if (t==3&&c==u[3]){
				t++;
			}
		}
		if (t==4){
			ans.push_back(i);
		}
	}
	cout<<ans.size()<<endl;
	for (int x : ans){
		cout<<x<<endl;
	}
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED