Ton

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_ f(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j) {
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  return (f, d, j, a, i, g, b, e, h, c);   ;; optimal code is 4 ops, 6 bytes
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  ;; s1 s8 XCHG  s1 s6 XCHG  7 3 BLKSWAP  s9 s4 XCHG2
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}
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