/// In The Name Of God
#include "sorting.h"
#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define pp pop_back
#define mp make_pair
#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()
#define rep(i, l, r) for (int i = (l); i < (r); i++)
#define per(i, l, r) for (int i = (l); i >= (r); i--)
#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define nl '\n'
#define ioi exit(0);
const int MAXN = (int)2e5 + 7;
using namespace std;
int n, m;
int a[MAXN], b[MAXN], x[MAXN], y[MAXN];
bool check(int len) {
rep(i, 0, n) {
b[i] = a[i];
}
rep(i, 0, len) {
swap(b[x[i]], b[y[i]]);
}
int cnt = 0;
rep(i, 0, n) {
if (b[i] != i) {
++cnt;
swap(b[i], b[b[i]]);
}
}
if (cnt > len) return 0;
return 1;
}
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
{
n = N;
m = M;
rep(i, 0, n) {
a[i] = S[i];
}
rep(i, 0, m) {
x[i] = X[i];
y[i] = Y[i];
}
} // copying
int l = 1, r = M, res = -1;
while (l <= r) {
int mid = (l + r) >> 1;
if (check(mid)) res = mid, r = mid - 1;
else l = mid + 1;
}
assert(res != -1);
rep(i, 0, n) {
b[i] = a[i];
}
rep(i, 0, res) {
swap(b[x[i]], b[y[i]]);
}
vector < pair <int, int> > need;
rep(i, 0, n) {
if (b[i] != i) {
need.pb({b[i], b[b[i]]});
swap(b[i], b[b[i]]);
}
}
rep(i, 0, res) {
if (!sz(need)) {
swap(S[X[i]], S[Y[i]]);
P[i] = 0;
Q[i] = 0;
}
else {
int v1 = need.back().f, v2 = need.back().s;
need.pop_back();
swap(S[X[i]], S[Y[i]]);
int p1 = -1, p2;
rep(j, 0, n) {
if (S[j] == v1 || S[j] == v2) {
if (p1 == -1) p1 = j;
p2 = j;
}
}
P[i] = p1;
Q[i] = p2;
swap(S[p1], S[p2]);
}
}
return res;
}
#ifdef IOI2018
int main() {
if (0) {
freopen ("sorting.in", "r", stdin);
int n, m;
cin >> n;
int s[n], c[n];
for (int i = 0; i < n; i++) cin >> s[i], c[i] = s[i];
cin >> m;
int x[m], y[m];
for (int i = 0; i < m; i++) cin >> x[i] >> y[i];
int p[m], q[m];
int ans = findSwapPairs(n, s, m, x, y, p, q);
for (int i = 0; i < ans; i++) {
swap(c[x[i]], c[y[i]]);
swap(c[p[i]], c[q[i]]);
}
for (int i = 0; i < n; i++) {
cout << c[i] << ' ';
}
ioi
}
srand(time(0));
for (int T = 5; T <= 100; T++) {
srand(T);
int n = rand() % 5 + 1, m = 30 * n;
int s[n], a[n], c[n];
for (int i = 0; i < n; i++) s[i] = i;
random_shuffle(s, s + n);
for (int i = 0; i < n; i++) a[i] = c[i] = s[i];
int x[m], y[m];
for (int i = 0; i < m; i++) {
x[i] = 0, y[i] = 1;
}
int p[m], q[m];
int ans = findSwapPairs(n, s, m, x, y, p, q);
for (int i = 0; i < ans; i++) {
swap(c[x[i]], c[y[i]]);
swap(c[p[i]], c[q[i]]);
}
bool bad = 0;
for (int i = 0; i < n; i++) {
if (c[i] != i) bad = 1;
}
if (bad == 1) {
cout << n << nl;
for (int i = 0; i < n; i++) cout << a[i] << ' ';
cout << nl;
cout << m << nl;
for (int i = 0; i < m; i++) {
cout << x[i] << ' ' << y[i] << nl;
}
ioi
assert(0);
}
}
}
#endif
