Baekjoon #14395

import java.util.*;
import java.io.*;

public class Main {
    private static long s, t;

    public static void main(String[] args) {
        FastReader rd = new FastReader();

        s = rd.nextLong();
        t = rd.nextLong();

        if (s == t) {
            System.out.println(0);
            return;
        }

        Queue<Node> q = new LinkedList<>();
        HashSet<Long> h_set = new HashSet<>();
        q.add(new Node(s * s, "*"));
        h_set.add(s * s);
        q.add(new Node(s + s, "+"));
        h_set.add(s + s);
        q.add(new Node(1L, "/"));
        h_set.add(1L);


        boolean check = false;
        while (!q.isEmpty()) {
            Node curr = q.poll();
            if (curr.num == t) {
                System.out.println(curr.str);
                check = true;
                q.clear();
                break;
            }

            if (curr.num > 1e9) continue;

            long num = curr.num;
            if (!h_set.contains(num * num)) {
                h_set.add(num * num);
                q.add(new Node(num * num, curr.str + "*"));
            }

            if (!h_set.contains(num + num)) {
                h_set.add(num + num);
                q.add(new Node(num + num, curr.str + "+"));
            }


        }

        if (!check) System.out.println(-1);
    }


    static class Node {
        long num;
        String str;

        Node(long num, String str) {
            this.num = num;
            this.str = str;
        }

    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}