private fun readInts() = readLine()!!.split(" ").map { it.toInt() }
private fun readLongs() = readLine()!!.split(" ").map { it.toLong() }

private fun gcd(a: Long, b: Long): Long = when {
    a < b -> gcd(b, a)
    b == 0L -> a
    else -> gcd(b, a % b)
}

private fun lcm(a: Long, b: Long) = a / gcd(a, b) * b
private fun gcd(a: Int, b: Int) = gcd(a.toLong(), b.toLong()).toInt()
private fun lcm(a: Int, b: Int) = lcm(a.toLong(), b.toLong()).toInt()

fun main(args: Array<String>) {
    val (A, B, C) = readInts()
    println(if (setOf(A, B, C).size == 1) "Yes" else "No")
}