#include "/Users/the_sun/stdc++.h"

//#include <bits/stdc++.h>

using namespace std;

ifstream in("input.txt");
ofstream out("output.txt");

#define pub push_back
#define pob pop_back
#define F first
#define S second
#define PI acos(-1)

typedef long long ll;

const int MAXN = 1e5 + 7;
const ll MAXL = 1e18;
const int N = 1e7;
const double eps = 1e-11;

int main() {
    ll n, k;
    cin >> n >> k;
    ll a, b, c, d;
    cin >> a >> b >> c >> d;
    a--;
    b--;
    c--;
    d--;
    bool must = false;
    if ((b - a + 1) >= k || (d - c + 1) >= k) {
        must = true;
    }
    ll start = -1, name = -1;
    //без замен
    if (!must) {
        //ставим первого первым
        bool can = true;
        ll kek1 = a % (2 * k);
        ll kek2 = b % (2 * k);
        if (b / (2 * k) * 2 * k >= a && b / (2 * k) * 2 * k <= b) {
            can = false;
        }
        ll kek3 = c % (k);
        ll kek4 = d % (k);
        if (d / (2 * k) + )
        if (can) {

        }
    }
    return 0;
}

/*
 8
.exe
script
a.in.txt
a.t
con.exe
solution.cpp
b.java
verylongname.txt
 */