#include <bits/stdc++.h>
 
using namespace std;
 
int main() {
    int t;
    cin>>t;
    while (t --> 0) {
        int x;
        cin>>x;
        if (x == 1) {
            cout<<"2"<<endl<<"DUP DROP"<<endl;
        } else {
            cout<<(x + x - 2)<<endl;
            for (int i = 1; i < x; i++) cout<<"DUP ";
            for (int i = 1; i < x; i++) cout<<"+ ";
            cout<<endl;
        }
    }
}