//請輸入分數1-100，評分A,B,C,D,E

//請輸入分數1-100，評分A,B,C,D,E

public class U807_Switch 
{
public static void main(String[] args) 
{
java.util.Scanner scanner = 
new java.util.Scanner(System.in);
System.out.print("請輸入分數1-100: ");
byte score = scanner.nextByte();
//byte score = 81;

switch(score)
{
case 100:
case 99:
case 98:
case 97:
case 96:
case 95:
case 94:
case 93:
case 92:
case 91:
case 90:
System.out.println("成績:A");
break;

case 89: case 88: case 87: case 86: case 85: case 84: case 83: case 82: case 81: case 80:
System.out.println("成績:B");
break;

case 79:case 78:case 77:case 76:case 75:case 74:case 73:case 72:case 71:case 70:
System.out.println("成績:C");
break;

case 69:
case 68:
case 67:
case 66:
case 65:
case 64:
case 63:
case 62:
case 61:
case 60:
System.out.println("成績:D");
break;

default:
System.out.println("成績:E");
}
}
}