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f(n){n=sqrt(2*(rand()/215e7*n*++n21e8*n*++n/2)+1)-.5;}
Try it online!Try it online!
f(n){n=sqrt(2*(rand()/215e7*n*++n/2)+1)-.5;}
Try it online!
f(n){n=sqrt(2*(rand()/21e8*n*++n/2)+1)-.5;}
f(n){n=randn=sqrt(2*(rand()/22e8*n*-~n+2;n=sqrt(n&~1215e7*n*++n/2)+1)-.5;}
f(n){n=rand()/22e8*n*-~n+2;n=sqrt(n&~1)-.5;}
