#include <bits/stdc++.h>
using namespace std;
#define GET_MACRO(a, b, c, NAME, ...) NAME
#define rep(...) GET_MACRO(__VA_ARGS__, rep3, rep2)(__VA_ARGS__)
#define rep2(i, a) rep3 (i, 0, a)
#define rep3(i, a, b) for (int i = (a); i < (b); i++)
#define repr(...) GET_MACRO(__VA_ARGS__, repr3, repr2)(__VA_ARGS__)
#define repr2(i, a) repr3 (i, 0, a)
#define repr3(i, a, b) for (int i = (b) - 1; i >= (a); i--)
template<class T1, class T2> inline bool chmin(T1 &a, T2 b) { return b < a && (a = b, true); }
template<class T1, class T2> inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
using ll = long long;

pair<ll, ll> extgcd(ll a, ll b) {
	if (b == 0) return {1, 0};
	ll x, y;
	tie(x, y) = extgcd(b, a % b);
	return {y, x - a / b * y};
}

ll modulo(ll a, ll mod) {
	a %= mod; a += mod; a %= mod;
	return a;
}

ll modinv(ll a, ll mod) {
	if (a == 0) return -1;
	if (__gcd(a, mod) != 1) return -1;
	return modulo(extgcd(a, mod).first, mod);
}

int main() {
	int n;
	cin >> n;
	vector<int> p(n);
	rep (i, n) scanf("%d", &p[i]), p[i]--;

	vector<vector<int>> orb(n);
	vector<bool> vis(n);
	rep (i, n) if (!vis[i]) {
		int curr = i;
		while (!vis[curr]) {
			vis[curr] = true;
			orb[i].push_back(curr);
			curr = p[curr];
		}
	}

	vector<int> ans(n);
	map<ll, vector<vector<int>>> mp;
	rep (i, n) if (!orb[i].empty()) {
		mp[orb[i].size()].push_back(orb[i]);
	}
	for (auto p : mp) {
		int m = p.first;
		auto v = p.second;
		if (m % 2 == 0) {
			if (v.size() % 2 == 1) {
				cout << "No" << endl;
				return 0;
			}
			for (int i = 0; i < v.size(); i += 2) {
				auto v1 = v[i];
				auto v2 = v[i + 1];
				rep (j, m) {
					ans[v1[j]] = v2[j];
					ans[v2[j]] = v1[(j + 1) % m];
				}
			}
		} else {
			int inv = modinv(2, m);
			for (auto u : v) {
				rep (j, m) {
					ans[u[j]] = u[(j + inv) % m];
				}
			}
		}
	}

	cout << "Yes" << endl;

	// rep (i, n) printf("%d ", ans[i] + 1);
	// cout << endl;
	return 0;
}