public class Test05 {
public static void main(String[] args) {
String str = "";
Random r = new Random();
int i = r.nextInt(10);
int index = r.nextInt(5);
for (int i1 = 0; i1 < 5; i1++) {
if(index==i1){
str+=i;
}else{
int i2 = r.nextInt(26)+65;
char i3 = (char)i2;
str+=i3;
}
}
System.out.println(str);