Contest will be end at 17:00! How excited it is to see balloons floating around.
I knew you had solved the HDOJ 1004 Let the Balloon Rise already, so please settle the another version quickly. I have a lot of balloons and each has a color and I give each of them a number, same color has the same number. For example, red balloon is No.1, pink is No.2, black is No.3 . etc. I also have many rooms to store all the balloons.
There are some rules :
1. Every room stores several balloons but no two have the same color.
2. Collect all the balloons, we can find each color has even number of times of balloons except one.
Your task is to find which is the odd color and calculate its number of times.