I increased x if x<10 so that x=trunc((x+0.05)*10*n))/(10*n)
and then used formula ans>n*(x-y)/(y-1);

I tried much to do but that WA makes me go mad, please help me if you can I will be very thanksful, I think I may study smt. from that

and of course I increased y=y+0.05 as well