#include<iostream>
using namespace std;
int da1,da2,ans,hw[100];
bool bbb(int x){
	int n=0,s=x;
	while(s){
		n=n*10+s%10;
		s/=10;		
	}
	if (n == x)	
		return true;
	else 
		return false;
}
bool aaa(int x){
	if((x%100!=0&&x%4==0)||x%400==0)
		return true;
	else
		return false;
}
int main(){
	cin>>da1>>da2;
	
	for(int i=da1;i<=da2;i++){
			if(bbb(i)){
				ans++;
				cout<<i<<endl<<endl;
			}
			//cout<<i<<endl;
		int rq=i%100,nf=(i-i%10000)/10000,yf=(i-i%100-(i-i%10000))/100;
		if(yf==1||yf==3||yf==5||yf==7||yf==8||yf==10||yf==12){
			if(rq==31){
				if(yf==12){
					if(nf%10==9){
						if((nf%100-nf%10)/10==9){
							i+=1000100-991231;
						}
						else{
							i+=100100-91231;
						}
					}
					else{
						i+=10100;
						i-=1231;
					}
				}
				else{
					i+=100;
					i-=30;
				}
			}
		}
		else if(yf==4||yf==6||yf==9||yf==11){
			if(rq==30){
				i+=100;
				i-=30;
			}
		}
		else if(yf==2) {
			if(aaa(nf)){
				if(rq==29){
					i+=100;
					i-=29;
				}
			}
			else{
				if(rq==28){
					i+=100;
					i-=28;
				}
			}
		}
	}
	cout<<ans;
	return 0;
}