백준 - 1026번

public class Quiz_1026 {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		//System.out.println("N 개수 => ");
        int n = Integer.parseInt(sc.nextLine()) ; 
        
        
        int[] str = new int[n]; 
        int[] str2 = new int[n]; 
        
        
        
        //System.out.println("A줄 숫자 입력해 => ");
        String input1 = sc.nextLine();
        
        for(int i=0; i<str.length; i++){
        	str[i] = Integer.parseInt(input1.split(" ")[i]);
        	
        	// System.out.print(str[i]+" ");
        }
        Arrays.sort(str);

        //System.out.println("B줄 숫자 입력해 => ");
        String input2 = sc.nextLine();
        for(int i=0; i<str2.length; i++){
        	str2[i] = Integer.parseInt(input2.split(" ")[i]);
        	
        	// System.out.print(str2[i]+" ");
        }
        Arrays.sort(str2);
        
        int result = 0;
        int n1 = n-1;
        
        for(int i=0; i<n; i++){
        	result += str[i]  * str2[n1--];
        	//System.out.print(str[i]+" ");
        	//System.out.print(str2[i]+" ");
        }
        
        System.out.println(result);
        
        sc.close();
		

	}