class Answer {
	constructor(input) {
		const data = input.split(' ').map(Number);
		this.A = data[0];
		this.B = data[1];
		this.ans = false;
	}

	main() {
		let len = this.B + 1;
		for(let i=this.A;len>i;i++) {
			this.checkTextual(i);
			this.checkMultiple(i);
			if(this.ans) this.dest(i);
		}
	}

	checkTextual(num) {
		if(/3/.test(String(num))) this.ans = true;
	}

	checkMultiple(num) {
		if(num % 3 === 0) this.ans = true;
	}

	dest(ans) {
		console.log(ans);
		this.ans = false;
	}
}
new Answer(require("fs").readFileSync("/dev/stdin", "utf8")).main();