[백준] 1977번 : 완전제곱수 - Java(자바)

https://www.acmicpc.net/problem/1977

import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int m=s.nextInt();
        int n=s.nextInt();
        int min=n;
        int num=0;
        for(int i=1;;i++){
            if(i*i>=m && i*i<=n){
                num+=i*i;
                if(i*i<=min) min=i*i;
            }
            if(i*i>n) break;
        }
        if(num==0) System.out.println("-1");
        else{
            System.out.println(num);
            System.out.println(min);
        }
    }
}