#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

template <class T1>
class Operators
{
public:
    template <class T2>
    const T1 operator+(const T2& right) const{
        T1 ans = static_cast<const T1&>( *this );
        ans += right;
        return ans;
    }
    template <class T2>
    const T1 operator-(const T2& right) const{
        T1 ans = static_cast<const T1&>( *this );
        ans -= right;
        return ans;
    }
    template <class T2>
    const T1 operator*(const T2& right) const{
        T1 ans = static_cast<const T1&>( *this );
        ans *= right;
        return ans;
    }
    template <class T2>
    const T1 operator/(const T2& right) const{
        T1 ans = static_cast<const T1&>( *this );
        ans /= right;
        return ans;
    }
    bool operator!=(const T1& right) const{
        const T1& left = static_cast<const T1&>( *this );
        return !(left == right);
    }
    bool operator>(const T1& right) const{
        const T1& left = static_cast<const T1&>( *this );
        return right < left;
    }
    bool operator<=(const T1& right) const{
        const T1& left = static_cast<const T1&>( *this );
        return !(right < left);
    }
    bool operator>=(const T1& right) const{
        const T1& left = static_cast<const T1&>( *this );
        return !(left < right);
    }
};

class Point : public Operators<Point>
{
public:
    int y, x;
    Point(){
        y = x = 0;
    }
    Point(int y0, int x0){
        y = y0;
        x = x0;
    }
    Point& operator+=(const Point& p){
        y += p.y;
        x += p.x;
        return *this;
    }
    Point& operator-=(const Point& p){
        y -= p.y;
        x -= p.x;
        return *this;
    }
    Point& operator*=(int a){
        y *= a;
        x *= a;
        return *this;
    }
    Point& operator/=(int a){
        y /= a;
        x /= a;
        return *this;
    }
    bool operator==(const Point& p) const{
        return y == p.y && x == p.x;
    }
    long long length2() const{
        return y * (long long)y + x * (long long)x;
    }
    long long dist2(const Point& p) const{
        return (y - p.y) * (long long)(y - p.y) + (x - p.x) * (long long)(x - p.x);
    }
    long long dot(const Point& p) const{
        return y * (long long)p.y + x * (long long)p.x; // |a|*|b|*cosθ
    }
    long long cross(const Point& p) const{
        return x * (long long)p.y - y * (long long)p.x; // |a|*|b|*sinθ
    }
};

class Mod : public Operators<Mod>
{
private:
    static const int MOD = 998244353;
    long long a;
public:
    Mod(){
        a = 0;
    }
    Mod(long long x){
        a = (x % MOD + MOD) % MOD;
    }
    Mod& operator+=(const Mod& x){
        a = (a + x.a) % MOD;
        return *this;
    }
    Mod& operator-=(const Mod& x){
        a = (a - x.a + MOD) % MOD;
        return *this;
    }
    Mod& operator*=(const Mod& x){
        a = (a * x.a) % MOD;
        return *this;
    }
    Mod& operator/=(const Mod& x){ // フェルマーの小定理、MODが素数である場合のみ有効
        int b = MOD - 2;
        long long c = x.a;
        while(b > 0){
            if(b & 1){
                a *= c;
                a %= MOD;
            }
            c *= c;
            c %= MOD;
            b >>= 1;
        }
        return *this;
    }
    bool operator==(const Mod& x) const{
        return a == x.a;
    }
    long long getValue(){
        return a;
    }
};

int main()
{
    int n;
    cin >> n;
    vector<Point> p(n);
    for(int i=0; i<n; ++i)
        cin >> p[i].x >> p[i].y;

    Mod ans = 1;
    for(int i=0; i<n; ++i)
        ans *= 2;
    ans -= n + 1;

    for(int i=0; i<n; ++i){
        for(int j=i+1; j<n; ++j){
            Mod tmp = 1;
            for(int k=j+1; k<n; ++k){
                if((p[j] - p[i]).cross(p[k] - p[i]) == 0)
                    tmp *= 2;
            }
            ans -= tmp;
        }
    }
    cout << ans.getValue() << endl;

    return 0;
}


Measured memory_bytes: 256