import java.util.*

fun main(arr:Array<String>) {
    numCount = readLine()!!.toInt()
    targetNum = readLine()!!.toInt()
    numList = readLine()!!.split(" ").map { it.toInt() }
    val ret = getAns(numList[0], 1)
    println(ret.Ans)
}

var numCount = 0
var targetNum = 0
var numList = listOf<Int>()

val dic = mutableMapOf<Int, MutableMap<Int, Return>>()

fun getAns(subTotal:Int, idx:Int):Return {
    if(!dic.containsKey(subTotal)) {
        dic[subTotal] = mutableMapOf()
    }
    dic[subTotal]!![idx]?.let { return it }

    if(idx >= numCount) {
        return Return(subTotal, "")
    }

    if(subTotal > targetNum) {
        return Return(subTotal, "-")
    }

    val ret1 = getAns(subTotal+numList[idx], idx+1)
    val ret2 = getAns(subTotal*numList[idx], idx+1)
    var ret3:Return = Return(0, "-")
    if(ret1.Total == targetNum) {
        ret3 = Return(ret1.Total, "+" + ret1.Ans)
    } else if(ret2.Total == targetNum) {
        ret3 = Return(ret2.Total, "*" + ret2.Ans)
    } else {
        ret3 = Return(ret1.Total, "")
    }
    dic[subTotal]!![idx] = ret3
    return ret3
}

class Return(val Total:Int, val Ans:String)