const fs = require('fs');
 
const input = fs.readFileSync(0, 'utf8').trim().split(/\s+/);
const a = Number(input[0]);
const b = Number(input[1]);
 
const countClaps = (n) => {
    if (n < 1) return 0;
    const s = String(n);
 
    const memo = new Map();
 
    const dp = (pos, tight, leading) => {
        if (pos === s.length) {
            return [1, 0];
        }
 
        const key = `${pos}|${tight ? 1 : 0}|${leading ? 1 : 0}`;
        if (memo.has(key)) return memo.get(key);
 
        const limit = tight ? Number(s[pos]) : 9;
        let totalNumbers = 0;
        let totalClaps = 0;
 
        for (let d = 0; d <= limit; d++) {
            const newTight = tight && d === limit;
            const newLeading = leading && d === 0;
 
            const [cnt, clp] = dp(pos + 1, newTight, newLeading);
 
            totalNumbers += cnt;
            totalClaps += clp;
 
            if (!newLeading && (d === 3 || d === 6 || d === 9)) {
                totalClaps += cnt;
            }
        }
 
        const result = [totalNumbers, totalClaps];
        memo.set(key, result);
        return result;
    };
 
    const [_n, totalClapsFrom0ToN] = dp(0, true, true);
    return totalClapsFrom0ToN;
};
 
const solve369 = (a, b) => countClaps(b) - countClaps(a - 1);
 
console.log(solve369(a, b));

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