建议添加一组 hack 数据

5 1
1 2 2 3 4
2

3

#include <bits/stdc++.h>
using namespace std;
int main() {
	freopen("6.in", "w", stdout);
	ios::sync_with_stdio(false);
	ios_base::sync_with_stdio(false);
	cin.tie(0), cout.tie(0);
	int n = 1000000, q = 1000000;
	cout << n << ' ' << q << endl;
	cout << "1 1 4 5 1 4";
	n -= 6;
	for (int i = 1; i <= n; i += 2)
		cout << ' ' << i << ' ' << i;
	cout << endl;
	for (int i = 1, j = 1; j <= q; j++, i += 2) {
		cout << i << endl;
	}
	return 0;
}

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