uva 10400

#include <bits/stdc++.h>
using namespace std;
#define addition 1
#define subtract 2
#define multiply 3
#define division 4
int dp[110][64010];

int n ;
int  arr[110];
void call( int index ,  int total , int prevTotal)
{

//cout<<index<<" "<<total<<" "<<prevTotal<<endl;
    int convertedTotal;
    if(total<0)
        convertedTotal = 32000-total;
    else
        convertedTotal = total;

    if(dp[index][convertedTotal]!=-1)
    {
        return;
    }

    if(index==n)
    {
        dp[index][convertedTotal] = prevTotal;
        return;
    }

    if(total+arr[index]<=32000 || total+arr[index]>=-32000)
        call(index+1, total+arr[index], total);
    if(total-arr[index]<=32000 || total-arr[index]>=-32000)
        call(index+1, total-arr[index], total);
    if(arr[index]!=0 && total!=0)
    {
        if( abs(total) <=   32000/abs(arr[index]) )
            call(index+1, total*arr[index], total);
    }
    if(arr[index]!=0 && total!=0  )
    {
        if( total%arr[index]==0 && (total/arr[index]<=32000 || total/arr[index]>=-32000))
            call(index+1, total/arr[index], total);
    }
    dp[index][convertedTotal] = prevTotal;

    return ;

}
int main()
{

    //freopen("input.txt","r",stdin);

    int test;
    cin>>test;
    while(test--)
    {

        memset(dp, -1 , sizeof dp);

        int num;
        cin>>n;
        for(int i =0; i<n; i++)
            cin>>arr[i];
        cin>>num;
        int i =n;
        int target=num;
        if(n==1)
        {
            if(arr[0]==num)
            printf("%d=%d\n",num,num);
            else
            printf("NO EXPRESSION\n");
        }
        else{
        call(0,0,0);

        stack<int>ans;

        dp[0][0]=-1;
        if(num<0)
        {
            num = 32000-num;
        }
        while(dp[i][num]!=-1)
        {
            int cmp = dp[i][num];

            if(i==1)
                break;

            if(num>32000)
                num = -(num-32000);

            if(cmp-arr[i-1]==num)
            {
                ans.push(subtract);
            }
            else if(cmp+arr[i-1]==num)
            {
                ans.push(addition);
            }
            else if(arr[i-1]*cmp==num)
            {
                ans.push(multiply);
            }
            else
            {
                if(arr[i-1]!=0 )
                    if(cmp/arr[i-1]==num && cmp%arr[i-1]==0)
                    {
                        ans.push(division);
                    }
            }

            num = cmp;
            if(num<0)
                num=32000-num;
            i--;
        }
        i=0;
        if(ans.empty()==false)
        {
            while(ans.empty()!=true)
            {
                int sign = ans.top();
                cout<<arr[i++];

                if(sign==1)
                    cout<<"+";
                else if(sign==2)
                    cout<<"-";
                else if(sign==3)
                    cout<<"*";
                else
                    cout<<"/";

                ans.pop();
            }

            cout<<arr[i++]<<"="<<target<<"\n";
        }
        else
        {
            cout<<"NO EXPRESSION"<<endl;
        }
//return 0;
        }
    }
}