#pragma GCC optimize ("O3")
#pragma GCC target ("avx2")
//#include<bits/stdc++.h>
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef __int128 lll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please

//こんなクソコードを生み出してしまうなんて趣味は罪ね

const int mod = 1e9 + 7;
const int IMAX = 200000;
const int D[9] = { 1,10,100,1000,10000,100000,1000000,10000000,100000000 };
class unko {
public:
	int f[IMAX + 1];
	//働いてない？
	constexpr unko() : f() {
		f[0] = 1;
		rep1(i, IMAX) f[i] = ll(f[i - 1]) * 2 % mod;
	}
} f;

void pakuri_sort(int N, ull A[]) {
	const int b = 8;
	ull tmp[200001];
	rep(k, 8) {
		int kazu[1 << b] = {}, kazu2[1 << b] = {};
		rep(i, N) kazu[A[i] >> k * b & ((1 << b) - 1)]++;
		rep(i, (1 << b) - 1) kazu[i + 1] += kazu[i];
		for (int i = N - 1; i >= 0; i--) tmp[--kazu[A[i] >> k * b & ((1 << b) - 1)]] = A[i];
		k++;
		rep(i, N) kazu2[tmp[i] >> k * b & ((1 << b) - 1)]++;
		rep(i, (1 << b) - 1) kazu2[i + 1] += kazu2[i];
		for (int i = N - 1; i >= 0; i--) A[--kazu2[tmp[i] >> k * b & ((1 << b) - 1)]] = tmp[i];
	}
}

const int CM = 1 << 17, CL = 22;
char cn[CM + CL], * ci = cn + CM + CL, * owa = cn + CM, ct;
const ll ma0 = 1157442765409226768;
const ll ma1 = 1085102592571150095;
const ll ma2 = 71777214294589695;
const ll ma3 = 281470681808895;
const ll ma4 = 4294967295;
inline ll getint() {
	if (ci - owa > 0) {
		memcpy(cn, owa, CL);
		ci -= CM;
		fread(cn + CL, 1, CM, stdin);
	}
	int pn = 1;
	if (*ci == '-') {
		pn = -pn;
		ci++;
	}
	ll tmp = *(ll*)ci;
	int dig = ((tmp & ma0) ^ ma0) ? 68 - __builtin_ctzll((tmp & ma0) ^ ma0) : 0;
	tmp = tmp << dig & ma1;
	tmp = tmp * 10 + (tmp >> 8) & ma2;
	tmp = tmp * 100 + (tmp >> 16) & ma3;
	tmp = tmp * 10000 + (tmp >> 32) & ma4;
	ci += (64 - dig >> 3);
	ll tmp2 = *(ll*)ci;
	dig = ((tmp2 & ma0) ^ ma0) ? 68 - __builtin_ctzll((tmp2 & ma0) ^ ma0) : 0;
	tmp2 = dig == 64 ? 0 : tmp2 << dig & ma1;
	tmp2 = tmp2 * 10 + (tmp2 >> 8) & ma2;
	tmp2 = tmp2 * 100 + (tmp2 >> 16) & ma3;
	tmp2 = tmp2 * 10000 + (tmp2 >> 32) & ma4;
	int d = (64 - dig >> 3); 
	tmp = tmp * D[d] + tmp2;
	ci += d;
	while ((ct = *ci++) >= '0') tmp = tmp * 10 + ct - '0';
	return pn * tmp;
}

const ull ma = (1ull << 52) - 1;
int main() {
	//cin.tie(0);
	//ios::sync_with_stdio(false);


	int N = getint();
	ull AB[200001];
	int a0 = 0, b0 = 0;
	int ab00 = 0;
	int n = 0;
	rep(i, N) {
		ll a = getint(), b = getint();

		if (a == 0 && b == 0) {
			ab00++;
			continue;
		}
		if (a == 0) {
			a0++;
			continue;
		}
		if (b == 0) {
			b0++;
			continue;
		}

		if (a < 0) {
			a = -a;
			b = -b;
		}
		bool p = (b > 0);
		if (!p) {
			b = -b;
			swap(a, b);
		}

		ull tmp = 0;
		rep(i, 3) {
			tmp *= 3;
			if (b) {
				int k = __builtin_clzll(a) - __builtin_clzll(b);
				if (k > 0) a <<= k;
				else b <<= -k;
				if (a > b) {
					b <<= 1;
					k--;
				}
				double d = double(b) / a;
				ull tmp1 = *(ull*)& d;
				ull c = tmp1 & ma | (1ull << 52);
				lll sa = (lll(b) << 52) - lll(a) * c;
				while (sa >= 0) {
					sa -= a;
					c++;
				}
				while (sa < 0) {
					sa += a;
					c--;
				}
				tmp += ull(k + 63) << 53 | c;
				b = sa;
			}
		}

		if (p) AB[n++] = tmp << 1 | 1ull;
		else AB[n++] = tmp << 1;
	}
	pakuri_sort(n, AB);

	ll kotae = 1;
	ull mae = AB[0] >> 1;
	int k1 = 0, k2 = 0;
	rep(i, n) {
		if (mae != AB[i] >> 1) {
			kotae = kotae * (f.f[k1] + f.f[k2] - 1) % mod;
			k1 = 0;
			k2 = 0;
			mae = AB[i] >> 1;
		}
		if (AB[i] & 1ull) k1++;
		else k2++;
	}
	kotae = kotae * (f.f[k1] + f.f[k2] - 1) % mod;

	kotae = kotae * (f.f[a0] + f.f[b0] - 1) % mod;

	printf("%lld\n", (kotae - 1 + ab00 + mod) % mod);

	Would you please return 0;
}

Measured memory_bytes: 6332