package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var out = bufio.NewWriter(os.Stdout)

func main() {
	buf := make([]byte, 1024*1024)
	sc.Buffer(buf, bufio.MaxScanTokenSize)
	sc.Split(bufio.ScanWords)

	n, s := nextInt(), nextInt()
	sd := s - 29*(n-1)
	if 25 <= s && sd < 30 {
		PrintString("Yes")
	} else {
		PrintString("No")
	}
}

func nextInt() int {
	sc.Scan()
	i, _ := strconv.Atoi(sc.Text())
	return i
}

func PrintString(x string) {
	defer out.Flush()
	fmt.Fprintln(out, x)
}

func Ceil(x, y int) int {
	return (x + y - 1) / y
}