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fun sum (x,m: int) returns (s: int)
let
s = x + m
tel
fun substr (x,m: int) returns (d: int; m2:int)
let
d = x - m;
m2 = m;
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fun mean<<n: int>> (i: int^n) returns (m: int)
let
m = (fold (+) <<n>> (i,0)) /n
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node normalized_movie<<n: int>> (i: int^n) returns (im: int^n)
var m: int; trash: int;
let
m = mean<<n>>(i);
(im,trash) = mapfold substr <<n>> (i,m)
tel