#include <bits/stdc++.h>

#define VARNAME(x) #x
#define show(x) cerr << #x << " = " << x << endl

using namespace std;
using ll = long long;
using ld = long double;

template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v)
{
    os << "sz:" << v.size() << "\n[";
    for (const auto& p : v) {
        os << p << ",";
    }
    os << "]\n";
    return os;
}

template <typename S, typename T>
ostream& operator<<(ostream& os, const pair<S, T>& p)
{
    os << "(" << p.first << "," << p.second
       << ")";
    return os;
}


constexpr ll MOD = (ll)1e9 + 7LL;
constexpr ld PI = static_cast<ld>(3.1415926535898);

template <typename T>
constexpr T INF = numeric_limits<T>::max() / 10;

struct Vec {
    ll dx;
    ll dy;
    ll dz;
    ll dot(const Vec& v)
    {
        return (dx * v.dx + dy * v.dy + dz * v.dz);
    }
};

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4;
    cin >> x1 >> y1 >> z1 >> x2 >> y2 >> z2 >> x3 >> y3 >> z3 >> x4 >> y4 >> z4;
    Vec v1{x2 - x1, y2 - y1, z2 - z1};
    Vec v2{x3 - x1, y3 - y1, z3 - z1};
    Vec v3{x4 - x1, y4 - y1, z4 - z1};
    const ll ab = v1.dot(v2);
    const ll n1 = v1.dot(v1);
    const ll n2 = v2.dot(v2);
    const ll ac = v1.dot(v3);
    const ll bc = v2.dot(v3);
    const ll x = n2 * ac - ab * bc;
    const ll y = -ab * ac + n1 * bc;
    cout << (x + y < n1 * n2 - ab * ab ? "YES" : "NO") << endl;

    return 0;
}