def mystery $($num$1,$ num $2)$

if num $1==$num $2$

return num $1$

if num $1>$ num $2$

return mystery$($num$2,$ num$1)$

if num$2\%5==$ num$1\%5$

return mystery$($num$1,$ num$2+1)$

value $=$ mystery$(8,5)$

print$($value$)$