Qwerty Ranger take government job arrive planet Mars he stay secret lab conduct experiment bacteria funny abnormal property the job is not difficult salary highat begin experiment single bacterium test tube every second bacterium test tube divide k bacteria after abnormal effect create b bacteria test tube thus begin second test tube x bacteria end second kxb bacteriaThe experiment show n second exactly z bacteria experiment end pointfor second experiment Qwerty go sterilize test tube t bacteria he have not start experiment wonder second need grow z bacteria the ranger think bacteria divide rule experiment help Qwerty find minimum number second need tube z bacteria second experiment