Kayzin is a magician. During a performance one day, he took out two keychains and covered them with a cup. He claimed that when the cup were lifted, the two keychains would be interlocked. But because of the poor lighting, the audience can't see clearly, so the audience wants you to figure out whether the two keychains are interlocked. If yes, please print "Yes", otherwise print "No".
A keychain can be described as a circle in 3-dimensional space.
Two keychains are interlocked, if and only if we can't let their center's distance greater than $10^{114514}$ by moving two keychains without collision.
For the first sample, two keychains are as follows, they are interlocked obviously.