549 : 반복제어문3 - 자가진단1

Java

import java.util.Scanner;
 
public class Main {
    public static void main (String[] arg) {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int sum = 0, count = 0;
 
        for (int i=0; sum < num; i++) {
            sum += (2*i)+1;
            count++;
        }
 
        System.out.println(count + " " + sum);
    }
}