Program

#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll solve(ll target, vector<string>& s) {
    ll count = 0;
    while (target > 1){
        if (target % 2 == 0 && target != 4) {
            s.push_back("MUL");
            target /= 2;
        } else {
            s.push_back("ADD");
            target -= 3;
        }
        count++;
    }
    count++;
    return (target == 1)?count:-1;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
	
	ll n;
	cin >> n;
	
	vector<string> s;
	
	ll sol = solve(n, s);
	
	if (sol == -1){
	    cout << 0 << "\n";
	    return 0;
	}
	
	cout << sol << "\n";
	for (int i = s.size()-1; i >= 0; i--){
	    cout << s[i] << "\n";
	}
	cout << "END";

    return 0;
}

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

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: ACCEPTED

Test 29

Verdict: ACCEPTED

Test 30

Verdict: ACCEPTED