import java.util.Scanner;
public class While3b {
   public static void main(String[]	args){
      int i = 1;
      int sum = 0;
      String str = "Hello there";
      int len = str.length();
      while (true) {
         str = str.substring(0,i)+'i'+ str.substring(i+1,len);
         sum = i;
         if (i >= 4)
            break;
         i++;
      }
      System.out.printf("sum = %d \"%s\" ", sum, str);
   }
}