It has been specified that Yi will be co prime with H.
But in the input Y1=Y3=3 which is not co prime with H=6.
It has been specified that Yi will be co prime with H.
But in the input Y1=Y3=3 which is not co prime with H=6.
This is known; see the comment from j_for in the Comments section, and the reply from the setter
I also notice that.