#[allow(unused_imports)]
use proconio::{input, marker::*};

#[allow(unused_imports)]
use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque};

#[allow(unused_imports)]
use std::io::Write;

#[allow(unused_macros)]
macro_rules! debug {
    ($($a:expr),*) => {
        #[cfg(debug_assertions)]
        writeln!(&mut std::io::stderr(), concat!("[DEBUG] ", $(stringify!($a), "={:?} "),*), $($a),*).unwrap();
    }
}

fn gcd(a: usize, b: usize) -> usize {
    if a == usize::default() {
        b
    } else {
        gcd(b % a, a)
    }
}

use self::modint::ModInt;
mod modint {
    use std;
    #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
    pub struct ModInt(usize);
    impl ModInt {
        pub fn new(value: usize) -> Self {
            ModInt(value % Self::modulo())
        }
        fn modulo() -> usize {
            1_000_000_007
        }
        pub fn pow(&self, n: usize) -> Self {
            let mut res = ModInt::new(1);
            let mut beki = *self;
            let mut n = n;
            while n > 0 {
                if n % 2 == 1 {
                    res *= beki;
                }
                beki *= beki;
                n /= 2;
            }
            res
        }
    }
    impl std::ops::Add for ModInt {
        type Output = Self;
        fn add(self, other: Self) -> Self {
            let mut value = self.0 + other.0;
            if value > Self::modulo() {
                value -= Self::modulo();
            }
            ModInt::new(value)
        }
    }
    impl std::ops::Add<usize> for ModInt {
        type Output = Self;
        fn add(self, other: usize) -> Self {
            let other = ModInt::new(other);
            self + other
        }
    }
    impl std::ops::Sub for ModInt {
        type Output = Self;
        fn sub(self, other: Self) -> Self {
            let mut value = self.0;
            if value < other.0 {
                value += Self::modulo();
            }
            value -= other.0;
            ModInt::new(value)
        }
    }
    impl std::ops::Sub<usize> for ModInt {
        type Output = Self;
        fn sub(self, other: usize) -> Self {
            let other = ModInt::new(other);
            self - other
        }
    }
    impl std::ops::Mul for ModInt {
        type Output = Self;
        fn mul(self, other: Self) -> Self {
            let value = self.0 * other.0 % Self::modulo();
            ModInt::new(value)
        }
    }
    impl std::ops::Mul<usize> for ModInt {
        type Output = Self;
        fn mul(self, other: usize) -> Self {
            let other = ModInt::new(other);
            self * other
        }
    }
    impl std::ops::Mul<ModInt> for usize {
        type Output = ModInt;
        fn mul(self, other: ModInt) -> Self::Output {
            let value = ModInt::new(self);
            value * other
        }
    }
    impl std::ops::Div for ModInt {
        type Output = Self;
        fn div(self, other: Self) -> Self {
            let mut exp = Self::modulo() - 2;
            let mut value = self.0;
            let mut ovalue = other.0;
            while exp > 0 {
                if exp % 2 == 1 {
                    value = value * ovalue % Self::modulo();
                }
                ovalue = ovalue * ovalue % Self::modulo();
                exp /= 2;
            }
            ModInt::new(value)
        }
    }
    impl std::ops::Div<usize> for ModInt {
        type Output = Self;
        fn div(self, other: usize) -> Self {
            let other = ModInt::new(other);
            self / other
        }
    }
    impl std::ops::AddAssign for ModInt {
        fn add_assign(&mut self, other: Self) {
            *self = *self + other;
        }
    }
    impl std::ops::AddAssign<usize> for ModInt {
        fn add_assign(&mut self, other: usize) {
            *self = *self + other;
        }
    }
    impl std::ops::SubAssign for ModInt {
        fn sub_assign(&mut self, other: Self) {
            *self = *self - other;
        }
    }
    impl std::ops::SubAssign<usize> for ModInt {
        fn sub_assign(&mut self, other: usize) {
            *self = *self - other;
        }
    }
    impl std::ops::MulAssign for ModInt {
        fn mul_assign(&mut self, other: Self) {
            *self = *self * other;
        }
    }
    impl std::ops::MulAssign<usize> for ModInt {
        fn mul_assign(&mut self, other: usize) {
            *self = *self * other;
        }
    }
    impl std::ops::DivAssign for ModInt {
        fn div_assign(&mut self, other: Self) {
            *self = *self / other;
        }
    }
    impl std::ops::DivAssign<usize> for ModInt {
        fn div_assign(&mut self, other: usize) {
            *self = *self / other;
        }
    }
    impl std::fmt::Debug for ModInt {
        fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
            write!(f, "{}", self.0)
        }
    }
    impl std::fmt::Display for ModInt {
        fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
            write!(f, "{}", self.0)
        }
    }
}

fn main() {
    input! {
        n: usize,
        ab: [(isize,isize);n],
    }

    let mut map = BTreeMap::new();
    for (a, b) in ab.into_iter() {
        if a == 0 && b == 0 {
            continue;
        }
        let g = gcd(a.abs() as usize, b.abs() as usize) as isize;
        let (a, b) = (a / g, b / g);
        let (a, b) = if a < 0 || (a == 0 && b < 0) {
            (-a, -b)
        } else {
            (a, b)
        };
        *map.entry((a, b)).or_insert(0) += 1;
    }
    let mut checked = BTreeSet::new();
    let mut res = ModInt::new(1);
    for (&(a, b), &left) in &map {
        if checked.contains(&(a, b)) {
            continue;
        }
        let (a, b) = if b < 0 || (b == 0 && a > 0) {
            (-b, a)
        } else {
            (b, -a)
        };
        checked.insert((a, b));
        let right = map.get(&(a, b)).cloned().unwrap_or(0);
        res *= ModInt::new(2).pow(left) + ModInt::new(2).pow(right) - 1;
    }
    println!("{}", res - 1);
}
