C.kt

fun main() {
    val k = readLine()!!.toInt()

    for (i in 0 until k) {
        val s = readLine()!!
        val t = readLine()!!

        var offset = 0
        var answer = true
        t.forEachIndexed { index, c ->
            when (s.getOrNull(index + offset)) {
                null -> answer = false
                c -> {}
                else -> if (c == '+') when (s.getOrNull(index + offset + 1)) {
                    '-' -> offset++
                    else -> answer = false
                } else {
                    answer = false
                }
            }
        }

        if (s.length - offset != t.length) {
            answer = false
        }

        println(if (answer) "YES" else "NO")
    }
}