visual Euclidean algorithm by rotary-o

val a=readLine split','map(_.toInt)
(Array.fill(a(1))("")/:('a'to'z')){(z,c)=>val d=a.min
for(i<-1 to d)z(~a(1)+z.size+i)+=(""+c)*d
a(d/a(0))-=d
z}map println

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