random: use nths-unsafe in sample.
random: use nths-unsafe in sample.

AlexIljin/factor,AlexIljin/factor,nicolas-p/factor,nicolas-p/factor,AlexIljin/factor,mrjbq7/factor,bpollack/factor,bjourne/factor,sarvex/factor-lang,AlexIljin/factor,AlexIljin/factor,bpollack/factor,bpollack/factor,slavapestov/factor,tgunr/factor,dch/factor,sarvex/factor-lang,mrjbq7/factor,factor/factor,sarvex/factor-lang,slavapestov/factor,bjourne/factor,slavapestov/factor,tgunr/factor,nicolas-p/factor,factor/factor,slavapestov/factor,bjourne/factor,tgunr/factor,nicolas-p/factor,dch/factor,sarvex/factor-lang,factor/factor,factor/factor,nicolas-p/factor,nicolas-p/factor,sarvex/factor-lang,AlexIljin/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,slavapestov/factor,bpollack/factor,bpollack/factor,nicolas-p/factor,mrjbq7/factor,factor/factor,sarvex/factor-lang,dch/factor,bpollack/factor,tgunr/factor,slavapestov/factor,dch/factor,slavapestov/factor,dch/factor,AlexIljin/factor,sarvex/factor-lang,mrjbq7/factor,bjourne/factor,bjourne/factor,bjourne/factor,bjourne/factor,bpollack/factor,factor/factor,dch/factor,tgunr/factor