package aoj.contest1399;

import java.util.Scanner;
 
public class G_SumNumbers {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while(in.hasNextInt()){
            int n,m;
            n = in.nextInt();
            m = in.nextInt();
            System.out.println(fun(n, m));
        }
        in.close();
    }
    private static int fun(int n, int m){
        int sum = 0;
        for(int i = n; i <= m; i++){
            if((i % 3 == 1) && (i % 5 == 3))
                sum += i;
        }
        return sum;
    }
}