import java.util.*;


public class Teste {
    ArrayList<Var> lista = new ArrayList<Var>();
    public String executa(String s){
        StringTokenizer st = new StringTokenizer(s);
        String b = "";
        while(st.hasMoreTokens()){
            String a = st.nextToken();
            b = st.nextToken();
            String c = st.nextToken();

            a.trim();
            b.trim();
            c.trim();


            executaInstrucao(a,b,c);
        }
        return b +" = "+ String.valueOf(getVariavel(b));
    }

    public void executaInstrucao(String a, String b, String c){
        int j = 0;
        int i = 0;
        if(a.equalsIgnoreCase("MOVE")){
            i = 1;
            boolean g = (c.charAt(0) == '0')||(c.charAt(0) == '1')||(c.charAt(0) == '2')||(c.charAt(0) == '3')||(c.charAt(0) == '4')||(c.charAt(0) == '5')||(c.charAt(0) == '6')||(c.charAt(0) == '7')||(c.charAt(0) == '8')||(c.charAt(0) == '9') ;
            if(g){
                j = Integer.parseInt(c);
                i = 6;
            }

        }else if(a.equalsIgnoreCase("ADD")){
            i = 2;
        }else if(a.equalsIgnoreCase("SUB")){
            i = 3;
        }else if(a.equalsIgnoreCase("MPY")){
            i = 4;
        }else if(a.equalsIgnoreCase("DIV")){
            i = 5;
        }
        switch(i){
            case 1: move(b,c); break;
            case 2: add(b,c); break;
            case 3: sub(b,c); break;
            case 4: mpy(b,c); break;
            case 5: div(b,c); break;
            case 6: move(b,j); break;
        }
    }

    public int getVariavel(String s){
        Var temp = null;
        boolean a = false;
        int j = 0;
        for (int i= 0;i<lista.size();i++ ){
            temp = (Var) lista.get(i);
            String t = temp.getNome();
            if(t.equalsIgnoreCase(s)){
                a = true;
                j = i;
            }
        }
        if(a){
            return lista.get(j).getConteudo();
        }else{
            return 0;
        }
    }

    public void setVariavel(String v, int c){
        Var temp = null;
        boolean a = false;
        int j = 0;
        for (int i= 0;i<lista.size();i++ ){
            temp = (Var) lista.get(i);
            String t = temp.getNome();
            if (t.equalsIgnoreCase(v)){
                a = true;
                j = i;
            }
        }
        if(a){
            temp = (Var) lista.get(j);
            temp.setConteudo(c);
            lista.set(j, temp);
        }else{
            Var newVar = new Var();
            newVar.setNome(v);
            newVar.setConteudo(c);
            lista.add(newVar);
        }
    }

    public void move(String o1, String o2){
        setVariavel(o1, getVariavel(o2));
    }

    public void move(String o1, int o2){
        setVariavel(o1, o2);
    }

    public void add(String o1, String o2){
        int i = getVariavel(o1) + getVariavel(o2);
        setVariavel(o1, i);
    }

    public void sub(String o1, String o2){
        int i = getVariavel(o1) - getVariavel(o2);
        setVariavel(o1, i);
    }

    public void mpy(String o1, String o2){
        int i = getVariavel(o1) * getVariavel(o2);
        setVariavel(o1, i);
    }

    public void div(String o1, String o2){
        int i = getVariavel(o1) / getVariavel(o2);
        setVariavel(o1, i);
    }

}