import java.util.Random;
import java.util.Vector;

public class BingoBall {

    private int num;

    public BingoBall(int n)
    {
        num = n;
    }
 public String getNumber() {
     String BingoNum = "";
     if (num >= 1 && num <= 15) {
         BingoNum = "B" + num;
         return BingoNum;
     } else if (num >= 16 && num <= 30) {
         BingoNum = "I" + num;
         return BingoNum;
     } else if (num >= 31 && num <= 45) {
         BingoNum = "N" + num;
         return BingoNum;
     } else if (num >= 46 && num <= 60) {
         BingoNum = "G" + num;
         return BingoNum;
     } else if (num >= 61 && num <= 75) {
         BingoNum = "O" + num;
         return BingoNum;
     }
     return BingoNum;
 }
}