let inpt = readLine()!.split(separator: " ").map({Int($0.split(separator: ".")[1])!})

var turn1 = (100000 - inpt[0]) * inpt[1]
var turn2 = inpt[0] * inpt[1]

if turn1 < turn2 {
    print("YES")
} else {
    print("NO")
}