import std.algorithm;
import std.array;
import std.ascii;
import std.bigint;
import std.complex;
import std.container;
import std.conv;
import std.functional;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

auto readInts() {
	return array(map!(to!int)(readln().strip().split()));
}
auto readInt() {
	return readInts()[0];
}
auto readLongs() {
	return array(map!(to!long)(readln().strip().split()));
}
auto readLong() {
	return readLongs()[0];
}

void readlnTo(T...)(ref T t) {
    auto s = readln().split();
    assert(s.length == t.length);
    foreach(ref ti; t) {
        ti = s[0].to!(typeof(ti));
        s = s[1..$];
    }
}

const real eps = 1e-10;

const long p = 1_000_000_000 + 7;

void main(){
    long n, a, b, c, d;
    readlnTo(n, a, b, c, d);
    foreach(i; iota(n)) {
        auto pmax = d * i;
        auto pmin = c * i;
        auto mmax = d * (n-i-1);
        auto mmin = c * (n-i-1);
        auto diff = b-a;
        if(pmin - mmax <= diff && diff <= pmax - mmin) {
            writeln("YES");
            return;
        }
    }
    writeln("NO");
}

