#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n, a, b, x, y, flag = 0;
  cin >> n >> a >> x >> b >> y;
  int in = 0;
  for (int i = 0; i < n; i++) {
    a = a % n + 1;
    b = b - 1;
    if (b == 0) b = n;
    if (a == b) {
      cout << "YES";
      flag = 1;
      break;
    }
    if (a == x or b == y) break;
  }
  if (flag == 0) cout << "NO";
  return 0;
}
