fn main() {
    input! {
        n: usize,
        a: [usize; n],
    }
    let w = 8 * std::mem::size_of::<usize>();
    let mut buf = vec![0usize; (1 << 30) / w];
    let mut memo = vec![0usize; w];
    for (mut x, memo) in memo.iter_mut().enumerate() {
        x |= (x & 0xFFFFFFFF00000000) >> 32;
        x |= (x & 0xFFFF0000FFFF0000) >> 16;
        x |= (x & 0xFF00FF00FF00FF00) >> 8;
        x |= (x & 0xF0F0F0F0F0F0F0F0) >> 4;
        x |= (x & 0xCCCCCCCCCCCCCCCC) >> 2;
        x |= (x & 0xAAAAAAAAAAAAAAAA) >> 1;
        *memo = x;
    }
    for a in a {
        buf[a / w] |= memo[a % w];
    }
    bitwise_transform(&mut buf, |a, b| *a |= *b);
    let ans = buf.into_iter().map(|b| b.count_ones()).sum::<u32>();
    println!("{}", ans);
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------
// ---------- begin bitwise transform ----------
pub fn bitwise_transform<T, F>(a: &mut [T], mut f: F)
where
    F: FnMut(&mut T, &mut T)
{
    let n = a.len().trailing_zeros() as usize;
    assert!(a.len() == 1 << n);
    for i in 0..n {
        for a in a.chunks_exact_mut(2 << i) {
            let (x, y) = a.split_at_mut(1 << i);
            for (x, y) in x.iter_mut().zip(y) {
                f(x, y);
            }
        }
    }
}
// ---------- end bitwise transform ----------