백준 9단계(2581)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
 
public class Main {
    
    //60
    //100
    //result 
    //620
    //61
    
    //64
    //65
    //result
    //-1
    //sieve of eratosthenes algo
    public static void main(String[] args) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        
        int start = Integer.parseInt(br.readLine().trim());
        int end = Integer.parseInt(br.readLine().trim());
        //에라토스테네스의 체
        boolean[] bool = new boolean[end + 1];
        
        for(int i = 2; i < bool.length; i++) {
            bool[i] = true;
        }
        
        for(int i = 2; i < Math.sqrt(bool.length); i++) {
            if(bool[i]) {
                for(int j = i * i; j < bool.length; j += i) {
                    bool[j] = false;
                }
            }
        }
        
        int sum = 0;
        int min = 10000;
        boolean print = false;
        for(int i = start; i <= end; i++) {
            if(bool[i]) {
                print = true;
                sum += i;
                if(min > i) min = i;
            }
        }
        
        if(print) bw.write(String.valueOf(sum) + "\n" + min);
        else bw.write("-1");
        bw.flush();
    }
}