#!/usr/bin/python

import sys;

def getLetterNum(num):
    switch(num):
        if(num == 1):
            return 3;
        
        elif(num == 2):
            return 3;

        elif(num == 3):
            return 5;
        
        elif(num == 4):
            return 3;
        
        elif(num == 5):
            return 3;
        
        elif(num == 6):
            return 3;
        
        elif(num == 7):
            return 3;
        
        elif(num == 8):
            return 3;
        
        elif(num == 9):
            return 3;
        
        elif(num == 10):
            return 3;
        
        elif(num == 11):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;
        elif(num == 2):
            return 3;


def countLetters(start, end):
    count = 0;
    for i in range(start, end+1):
        count += getLetterNum(i);
    return count;

start = int(sys.argv[1]);
end = int(sys.argv[2]);
print "Result is " + str(countLetters(start,end));