Fibonacci number sequence integer f00 f11 f21 f32 f43 f55 fnfn2fn1 so number sum previous twoBajtek develop nice way compute Fibonacci number blackboard first write 0 then write 1 then perform follow operation operation t replace number sum number operation b replace number sum number if perform n operation start t choose operation alternately sequence operation look like tbtbtbtb number write equal fn1unfortunately Bajtek make mistake repeat operation time row for example Bajtek want compute f7 want n6 operation TBTBTB if instead perform sequence operation TTTBBT 3 mistake incorrectly compute seventh Fibonacci number 10 the number mistake sequence operation number neighbour equal operation TT bbyou give number n operation Bajtek attempt compute fn1 number r result computation write number find minimum possible number mistake Bajtek possible sequence n operation result r number mistakesAssume Bajtek correctly start operation t