Submission #19,794

19794

2025-12-23 14:11:59

cpp17

Accepted 75/75

6ms

804 KiB

#include <iostream>
#include <bits/stdc++.h>
using ll = long long;
using namespace std;

int main()
{
    ll n; cin >> n;
    vector<ll> v(n+1);
    vector<ll> be(n+1, 0);
    for (ll i = 1; i <= n; i++){
        cin >> v[i];
        be[v[i]] = 1;
    }
    vector<ll> ul(n+1, 0), kesz(n+1, 0);
    ll szek = 1, ans = 0;
    for (ll i = 1; i <= n; i++){
        if (be[i] == 0){
            ll guy = i;
            while (!kesz[guy]){
                ul[guy] = szek;
                kesz[guy] = 1;
                szek++;
                if (!kesz[v[guy]]) ans++;
                guy = v[guy];
            }
        }
    }
    for (ll i = 1; i <= n; i++){
        if (kesz[i] == 0){
            ll guy = i;
            while (!kesz[guy]){
                ul[guy] = szek;
                kesz[guy] = 1;
                szek++;
                if (!kesz[v[guy]]) ans++;
                guy = v[guy];
            }
        }
    }
    
    cout << ans << "\n";
    for (ll i = 1; i <= n; i++){
        cout << ul[i] << " ";
    }
    return 0;
}

	Sum	Test	Verdict	Time	Memory
subtask1	0/0
		1	Accepted	1ms	316 KiB
		2	Accepted	4ms	564 KiB
subtask2	5/5
		3	Accepted	1ms	316 KiB
		4	Accepted	1ms	316 KiB
		5	Accepted	1ms	316 KiB
		6	Accepted	1ms	316 KiB
		7	Accepted	1ms	316 KiB
subtask3	5/5
		8	Accepted	1ms	316 KiB
		9	Accepted	1ms	316 KiB
		10	Accepted	1ms	316 KiB
		11	Accepted	1ms	316 KiB
		12	Accepted	1ms	316 KiB
subtask4	5/5
		13	Accepted	1ms	512 KiB
		14	Accepted	1ms	500 KiB
		15	Accepted	1ms	316 KiB
		16	Accepted	1ms	316 KiB
		17	Accepted	1ms	316 KiB
subtask5	10/10
		18	Accepted	2ms	316 KiB
		19	Accepted	2ms	508 KiB
		20	Accepted	2ms	316 KiB
		21	Accepted	2ms	316 KiB
		22	Accepted	1ms	316 KiB
		23	Accepted	1ms	336 KiB
		24	Accepted	1ms	316 KiB
		25	Accepted	1ms	316 KiB
		26	Accepted	4ms	556 KiB
		27	Accepted	4ms	552 KiB
subtask6	10/10
		28	Accepted	1ms	316 KiB
		29	Accepted	2ms	316 KiB
		30	Accepted	2ms	316 KiB
		31	Accepted	2ms	316 KiB
		32	Accepted	3ms	756 KiB
		33	Accepted	4ms	748 KiB
		34	Accepted	4ms	804 KiB
		35	Accepted	4ms	564 KiB
		36	Accepted	4ms	556 KiB
		37	Accepted	4ms	740 KiB
subtask7	40/40
		38	Accepted	2ms	508 KiB
		39	Accepted	2ms	512 KiB
		40	Accepted	2ms	316 KiB
		41	Accepted	3ms	316 KiB
		42	Accepted	3ms	472 KiB
		43	Accepted	4ms	596 KiB
		44	Accepted	4ms	604 KiB
		45	Accepted	4ms	652 KiB
		46	Accepted	4ms	564 KiB
		47	Accepted	4ms	564 KiB
		48	Accepted	4ms	556 KiB
		49	Accepted	6ms	556 KiB
		50	Accepted	4ms	608 KiB
		51	Accepted	6ms	760 KiB
		52	Accepted	4ms	564 KiB
		53	Accepted	4ms	564 KiB
		54	Accepted	4ms	564 KiB
		55	Accepted	4ms	552 KiB
		56	Accepted	6ms	564 KiB
		57	Accepted	6ms	724 KiB