#include <bits/stdc++.h>
using namespace std;

int main() {
    int N,a,b,c;
    cin >> N >> a >> b >> c;
    if(a == c) {
        cout << "No" << endl;
    }
    else if(a < b) {
        if(N-c+1+a <= N) {
            cout << "Yes" << endl;
        }
        else {
            cout << "No" << endl;
        }
    }
    else {
        if(N-a+1+c <= N) {
            cout << "Yes" << endl;
        }
        else {
            cout << "No" << endl;
        }
    }
}