Anyone understand what is the problem saying?

Nope Confusing as hail

Let $a \leq b \leq ... \leq f$ As $\frac{f}{a}$ is maximal possible, and maximal possible fraction from $b,c,d,e$ is $\frac{e}{b} \leq \frac{f}{a}$ then $\frac{e}{b}=\frac{f}{a} \to e=f,a=b$ Now let check fraction $\frac{d}{c} \geq 1$ Case 1: $\frac{d}{c}=\frac{f}{a} \to d=f,c=a$ Case 2: $\frac{d}{c}=\frac{a}{a}=1$ So answer is $(a,b,c,d,e,f)$ is permutation of $(k,k,m,m,n,n)$ or $(m,m,m,n,n,n)$ where $k,m,n$ are not necessary different