-module(l). -export([m/0]). m()->case io:fread('',"~d")of{_,[X]}->io:write(f(X)),io:nl(),m();_->0end. f(1)->1;f(X)->Y=f(X-1),X*Y div g(X,Y). g(X,0)->X;g(X,Y)->g(Y,X rem Y).
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