UVA - 11629 - Ballot evaluation

//Avoid Using Double parsing
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer("");
            StringTokenizer st=new StringTokenizer(br.readLine());
            int n=Integer.parseInt(st.nextToken());
            int m=Integer.parseInt(st.nextToken());
            HashMap<String,Integer> hm=new HashMap<String, Integer>();
            for(int i=0;i<n;i++){
                st=new StringTokenizer(br.readLine());
                hm.put(st.nextToken(), mult(st.nextToken()));
            }
            for(int i=1;i<m+1;i++){
                sb.append("Guess #").append(i).append(" was ");
                st=new StringTokenizer(br.readLine());
                int countofToken=st.countTokens();
                double ans=hm.get(st.nextToken());
                while(st.hasMoreTokens()){
                    String temp=st.nextToken();
                    if(temp.equals("+")){
                        ans+=hm.get(st.nextToken());
                    }
                    if(temp.equals("<")){
                        if(ans<10*Integer.parseInt(st.nextToken())){
                            sb.append("correct.\n");
                        }else{
                            sb.append("incorrect.\n");
                        }
                    }
                    else if(temp.equals(">")){
                        if(ans>10*Integer.parseInt(st.nextToken())){
                            sb.append("correct.\n");
                        }else{
                            sb.append("incorrect.\n");
                        }
                    }
                    else if(temp.equals(">=")){
                        if(ans>=10*Integer.parseInt(st.nextToken())){
                            sb.append("correct.\n");
                        }else{
                            sb.append("incorrect.\n");
                        }
                    }
                    else if(temp.equals("<=")){
                        if(ans<=10*Integer.parseInt(st.nextToken())){
                            sb.append("correct.\n");
                        }else{
                            sb.append("incorrect.\n");
                        }
                    }
                    else if(temp.equals("=")){
                        if(ans==10*Integer.parseInt(st.nextToken())){
                            sb.append("correct.\n");
                        }else{
                            sb.append("incorrect.\n");
                        }
                    }
                }
            }
        System.out.print(sb);
    }
   
    static int mult(String x){
        StringBuilder sb=new StringBuilder();
        for(int i=0;i<x.length();i++){
            if(x.charAt(i)>='0' &&x.charAt(i)<='9'){
                sb.append(x.charAt(i));
            }
        }
        return Integer.parseInt(sb.toString());
    }
}