$3{for(y=$1;$1<(x=(y*$2+1)/$3)||x%1;y--);print x,y}
3 1 1 1 5 2 5 5 3 2 50 48 49 6 0 1 5 1 2
1 0 1 2 5 3 49 50 1 6 3 5
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