Introduction - If you have any usage issues, please Google them yourself
12 balls : such a problem : In 12 sizes and colors are the same ball, There is a ball with the weight of the other 11 different weight of the ball. There are a balance, you can only use the F scale only said three times on this signal can find out? The procedure to solve this problem. Although the algorithm simpler, but the solution of the problem or difficult enough. And share!