#include <bits/stdc++.h>
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
void c_p_c() {}
void parray(int a[], int n) {
  for (int i = 0; i < n; i++) {
    cout << a[i] << " ";
  }
  cout << "\n";
}
bool Prime(long long x) {
  for (int i = 3; 1ll * i * i <= x; i++) {
    if (x % i == 0) {
      return false;
    }
  }
  return true;
}
string s[510];
long long n;
bool check(int i, int j) {
  ;
  if (i - 1 < 0 or j - 1 < 0 or i + 1 >= n or j + 1 >= n) return false;
  if (s[i - 1][j - 1] == 'X' and s[i - 1][j + 1] == 'X' and
      s[i + 1][j - 1] == 'X' and s[i + 1][j + 1] == 'X')
    return true;
  return false;
}
bool comp(pair<int, int> a, pair<int, int> b) {
  if (a.first == b.first) return a.second < b.second;
  return a.first > b.first;
}
int main() {
  long long i, m, k, c = 0, sum = 0;
  int p = 0;
  c_p_c();
  int a, b, x, y;
  cin >> n >> a >> x >> b >> y;
  --a;
  --x;
  --b;
  --y;
  bool t = false;
  while (a != x && b != y) {
    a = (a + 1) % n;
    b = (b - 1 + n) % n;
    if (a == b) {
      t = 1;
      break;
    }
  }
  if (t)
    cout << "YES";
  else
    cout << "NO";
}
