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<?php function coins_value($input1) { $p = 1; $q = 0; $m = 0; $n = 1; $res=array(0,0); if (($input1[0] < 0) || ($input1[1] < 0)) { return $res; } while ($input1[1] != 0) { $quot = ($input1[0])/($input1[1]); $rem = ($input1[0])% ($input1[1]); $input1[0] = $input1[1]; $input1[1] = $rem; $tmp = $m; $m = $p - ($quot * $m); $p = $tmp; $tmp = $n; $n = $q - ($quot * $n); $q = $tmp; } if ($input1[0] >= 0) { $res[0] = $p; $res[1] = $q; return $res; } $res[0] = -$p; $res[1] = -$q; return $res; } var_dump(coins_value([12, 25]));

preferences:
54.86 ms | 402 KiB | 5 Q