#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using ull = unsigned long long int;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int INT_INF = (int)(2e9);
const ll LL_INF = (ll)(2e18);
const ll mod = 1e9 + 7;
const int NIL = -1;
static mt19937 _g(time(nullptr));
inline ll randint(ll a, ll b) {
  ll w = (_g() << 31LL) ^ _g();
  return a + w % (b - a + 1);
}
inline void fast_io() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
};
template <typename T>
inline T sign(T x) {
  return T(x > 0) - T(x < 0);
}
template <typename T, typename S>
inline ostream& operator<<(ostream& os, const pair<T, S> p) {
  cout << "[" << p.first << ";" << p.second << "]";
  return os;
}
template <typename T>
inline ostream& operator<<(ostream& os, const vector<T>& v) {
  for (auto el : v) cout << el << " ";
  return os;
}
void solve() {
  int n;
  cin >> n;
  vector<int> a(n);
  map<int, int> cnt;
  for (auto& x : a) cin >> x;
  int acc = 0, different = 0;
  for (auto& x : a) {
    ++cnt[x];
    if (cnt[x] == 1) ++different;
  }
  if (different != 3) {
    cout << "No" << '\n';
    return;
  }
  vector<int> vals;
  for (auto& pr : cnt) vals.push_back(pr.first);
  for (auto& y : vals) acc ^= y;
  if (acc) {
    cout << "No" << '\n';
    return;
  }
  cout << "Yes" << '\n';
}
int main() {
  fast_io();
  solve();
  return 0;
}
