Forth

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int x;
    cin >> x;
    
    if (x==1){
        cout << "2 \n";
        cout << "DUP DROP\n";
    }
    else{
        cout << 2*x - 2 << "\n";
        for (int i = 1; i<x; ++i){
            cout << "DUP ";   
        }
        for (int i=1; i<x; ++i){
            cout << "+ ";
        }
        cout << "\n";
    }
}
 
 
 

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED