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sub two_sum_choroba {
    my ($input, $target) = @_;
...
        $seen{$x} = $i;
    }
}

Runtime: 48 ms, faster than 99.40% of Python3 online submissions for T
+wo Sum.
Memory Usage: 15.4 MB, less than 42.44% of Python3 online submissions 
+for Two Sum.

class Solution:
    def twoSum(self, nums: List[int], target: int) -> List[int]:
...
            if target - x in seen:
                return [i, seen[target - x]]
            seen[x] = i