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impl Solution {
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  pub fn two_out_of_three(nums1: Vec<i32>, nums2: Vec<i32>, nums3: Vec<i32>) -> Vec<i32> {
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    let mut counter = [0_i32; 101];
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    nums1.iter().for_each(|&x| counter[x as usize] |= 0b001);
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    nums2.iter().for_each(|&x| counter[x as usize] |= 0b010);
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    nums3.iter().for_each(|&x| counter[x as usize] |= 0b100);
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    counter
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      .iter()
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      .cloned()
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      .enumerate()
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      .filter_map(|(ind, x)| match x.count_ones() >= 2 {
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        true => Some(ind as i32),
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        false => None,
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      })
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      .collect::<Vec<_>>()
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  }
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}