문제 풀이 import java.io.*; import java.util.*; import java.text.DecimalFormat; class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); double kor = sc.nextInt(); double eng = sc.nextInt(); double math = sc.nextInt(); double avg = (kor+eng+math)/3.0; DecimalFormat df = new DecimalFormat("0.00"); String str = df.format(avg); System.out.print(str+" "); if(avg >= 90) ..