let inpt = readLine()!.split(separator: " ").map({Int(String($0.prefix(1))+String($0.suffix(5)))!})

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

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