Sample Input 

2
1
5
3
5

Sample Output 

Case 1: 9
Case 2: 8




import java.util.Scanner;

public class UVA10783 {

 public static void main(String[] args) {

  Scanner sc = new Scanner(System.in);

  int count = sc.nextInt();

  for (int i = 0; i < count; i++) {

   int start = sc.nextInt();

   int last = sc.nextInt();

   int sum = 0;

   if (start % 2 == 0)
    start++;

   for (int j = start; j <= last; j += 2) {

    if (j <= last) {

     sum += j;
    }

   }
   System.out.println("Case " + (i + 1) + ": " + sum);

  }

  sc.close();
 }

}