답안 #1002688

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1002688	2024-06-19T18:12:35 Z	aykhn	Watermelon (INOI20_watermelon)	C++17	100 / 100	70 ms	22864 KB

Main

#include <bits/stdc++.h>
 
using namespace std;
 
#define inf 0x3F3F3F3F

const int MXN = 1e5 + 5;
const int LOG = 20;

vector<int> adj[MXN];
int used[MXN];
int cyc = 0;

void dfs(int a)
{
  used[a] = 1;
  for (int &v : adj[a])
  {
    if (!used[v]) dfs(v);
    else if (used[v] == 1)
    {
      cyc = 1;
    }
  }
  used[a] = 2;
}

int n, k;
vector<int> perm, res;
int deg[MXN];
set<int> s;
int cnt = 0;


void findkth()
{
  if (perm.size() == n)
  {
    if (++cnt == k) res = perm;
    return;
  }
  for (int i = 0; i < s.size(); i++)
  {
    auto it = s.begin();
    for (int j = 0; j < i; j++) it++;
    int x = *it;
    perm.push_back(x);
    s.erase(it);
    vector<int> tmp;
    for (int &v : adj[x]) 
    {
      if (--deg[v] == 0) s.insert(v);
    }
    findkth();
    if (!res.empty()) return;
    perm.pop_back();
    s.insert(x);
    for (int &v : adj[x])
    {
      if (deg[v]++ == 0) s.erase(v);
    }
  }
}

signed main()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> k;
  int a[n + 1];
  for (int i = 1; i <= n; i++) cin >> a[i];
  if (a[n] != -1)
  {
    cout << -1 << '\n';
    return 0;
  }
  for (int i = 1; i <= n; i++)
  {
    if (a[i] == -1) a[i] = inf + n - i;
  }
  vector<int> v;
  for (int i = n; i >= 1; i--)
  {
    int mx = 0;
    while (!v.empty() && a[v.back()] < a[i])
    {
      adj[v.back()].push_back(i);
      deg[i]++;
      mx = max(mx, a[v.back()]);
      v.pop_back();
    }
    if (a[i] <= n && mx + 1 != a[i])
    {
      cout << -1 << '\n';
      return 0;
    }
    if (!v.empty())
    {
      adj[i].push_back(v.back());
      deg[v.back()]++;
      if (a[v.back()] == a[i]) v.pop_back();
    } 
    v.push_back(i);
  }
  for (int i = 1; i <= n; i++) if (!used[i]) dfs(i);
  if (cyc)
  {
    cout << -1 << '\n';
    return 0;
  }
  for (int i = 1; i <= n; i++) if (!deg[i]) s.insert(i);
  findkth();
  if (res.empty())
  {
    cout << -1 << '\n';
    return 0;
  }
  int ans[n + 1];
  for (int i = 0; i < n; i++) ans[res[i]] = i + 1;
  for (int i = 1; i <= n; i++) cout << ans[i] << ' ';
  cout << '\n';
}

Compilation message

Main.cpp: In function 'void findkth()':
Main.cpp:37:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |   if (perm.size() == n)
      |       ~~~~~~~~~~~~^~~~
Main.cpp:42:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for (int i = 0; i < s.size(); i++)
      |                   ~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2904 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	2 ms	2652 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	2 ms	2652 KB	Output is correct
14	Correct	1 ms	2652 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	2 ms	2652 KB	Output is correct
17	Correct	1 ms	2648 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2648 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	2 ms	2652 KB	Output is correct
27	Correct	2 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	2 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct

Subtask #2
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2904 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	2 ms	2652 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	2 ms	2652 KB	Output is correct
14	Correct	1 ms	2652 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	2 ms	2652 KB	Output is correct
17	Correct	1 ms	2648 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2648 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	2 ms	2652 KB	Output is correct
27	Correct	2 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	2 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	2 ms	3164 KB	Output is correct
35	Correct	2 ms	3164 KB	Output is correct
36	Correct	1 ms	2648 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	3 ms	3076 KB	Output is correct
39	Correct	2 ms	3200 KB	Output is correct
40	Correct	2 ms	3164 KB	Output is correct
41	Correct	3 ms	3084 KB	Output is correct
42	Correct	2 ms	3164 KB	Output is correct
43	Correct	2 ms	3164 KB	Output is correct
44	Correct	2 ms	3164 KB	Output is correct
45	Correct	1 ms	3164 KB	Output is correct
46	Correct	2 ms	3164 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	2 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	2 ms	2652 KB	Output is correct
51	Correct	2 ms	2648 KB	Output is correct
52	Correct	2 ms	2652 KB	Output is correct
53	Correct	2 ms	3164 KB	Output is correct
54	Correct	3 ms	3164 KB	Output is correct
55	Correct	2 ms	2652 KB	Output is correct
56	Correct	2 ms	2652 KB	Output is correct
57	Correct	2 ms	3160 KB	Output is correct
58	Correct	2 ms	3164 KB	Output is correct
59	Correct	2 ms	3164 KB	Output is correct
60	Correct	2 ms	3164 KB	Output is correct
61	Correct	2 ms	3076 KB	Output is correct
62	Correct	2 ms	3164 KB	Output is correct
63	Correct	3 ms	3164 KB	Output is correct
64	Correct	2 ms	2908 KB	Output is correct
65	Correct	2 ms	2908 KB	Output is correct

Subtask #3
31.0 / 31.0

#	결과	실행 시간	메모리	Grader output
1	Correct	18 ms	12352 KB	Output is correct
2	Correct	6 ms	3164 KB	Output is correct
3	Correct	17 ms	12248 KB	Output is correct
4	Correct	5 ms	3272 KB	Output is correct
5	Correct	16 ms	12252 KB	Output is correct
6	Correct	17 ms	12380 KB	Output is correct
7	Correct	18 ms	12380 KB	Output is correct
8	Correct	17 ms	12376 KB	Output is correct
9	Correct	16 ms	12376 KB	Output is correct
10	Correct	19 ms	12584 KB	Output is correct
11	Correct	35 ms	21836 KB	Output is correct
12	Correct	34 ms	21856 KB	Output is correct
13	Correct	32 ms	21916 KB	Output is correct
14	Correct	32 ms	21952 KB	Output is correct
15	Correct	6 ms	3676 KB	Output is correct
16	Correct	6 ms	3568 KB	Output is correct
17	Correct	7 ms	3740 KB	Output is correct
18	Correct	6 ms	3676 KB	Output is correct
19	Correct	6 ms	3696 KB	Output is correct
20	Correct	11 ms	3928 KB	Output is correct
21	Correct	6 ms	3676 KB	Output is correct
22	Correct	6 ms	3676 KB	Output is correct
23	Correct	11 ms	3572 KB	Output is correct
24	Correct	27 ms	21448 KB	Output is correct
25	Correct	29 ms	21452 KB	Output is correct
26	Correct	26 ms	21448 KB	Output is correct
27	Correct	27 ms	21448 KB	Output is correct
28	Correct	27 ms	21448 KB	Output is correct
29	Correct	38 ms	21452 KB	Output is correct
30	Correct	8 ms	8284 KB	Output is correct
31	Correct	14 ms	12112 KB	Output is correct
32	Correct	24 ms	19668 KB	Output is correct
33	Correct	44 ms	21452 KB	Output is correct
34	Correct	5 ms	4444 KB	Output is correct
35	Correct	6 ms	6556 KB	Output is correct
36	Correct	14 ms	11996 KB	Output is correct
37	Correct	35 ms	21452 KB	Output is correct
38	Correct	49 ms	21200 KB	Output is correct
39	Correct	38 ms	21460 KB	Output is correct
40	Correct	30 ms	22616 KB	Output is correct
41	Correct	24 ms	21640 KB	Output is correct

Subtask #4
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	18 ms	12352 KB	Output is correct
2	Correct	6 ms	3164 KB	Output is correct
3	Correct	17 ms	12248 KB	Output is correct
4	Correct	5 ms	3272 KB	Output is correct
5	Correct	16 ms	12252 KB	Output is correct
6	Correct	17 ms	12380 KB	Output is correct
7	Correct	18 ms	12380 KB	Output is correct
8	Correct	17 ms	12376 KB	Output is correct
9	Correct	16 ms	12376 KB	Output is correct
10	Correct	19 ms	12584 KB	Output is correct
11	Correct	35 ms	21836 KB	Output is correct
12	Correct	34 ms	21856 KB	Output is correct
13	Correct	32 ms	21916 KB	Output is correct
14	Correct	32 ms	21952 KB	Output is correct
15	Correct	6 ms	3676 KB	Output is correct
16	Correct	6 ms	3568 KB	Output is correct
17	Correct	7 ms	3740 KB	Output is correct
18	Correct	6 ms	3676 KB	Output is correct
19	Correct	6 ms	3696 KB	Output is correct
20	Correct	11 ms	3928 KB	Output is correct
21	Correct	6 ms	3676 KB	Output is correct
22	Correct	6 ms	3676 KB	Output is correct
23	Correct	11 ms	3572 KB	Output is correct
24	Correct	27 ms	21448 KB	Output is correct
25	Correct	29 ms	21452 KB	Output is correct
26	Correct	26 ms	21448 KB	Output is correct
27	Correct	27 ms	21448 KB	Output is correct
28	Correct	27 ms	21448 KB	Output is correct
29	Correct	38 ms	21452 KB	Output is correct
30	Correct	8 ms	8284 KB	Output is correct
31	Correct	14 ms	12112 KB	Output is correct
32	Correct	24 ms	19668 KB	Output is correct
33	Correct	44 ms	21452 KB	Output is correct
34	Correct	5 ms	4444 KB	Output is correct
35	Correct	6 ms	6556 KB	Output is correct
36	Correct	14 ms	11996 KB	Output is correct
37	Correct	35 ms	21452 KB	Output is correct
38	Correct	49 ms	21200 KB	Output is correct
39	Correct	38 ms	21460 KB	Output is correct
40	Correct	30 ms	22616 KB	Output is correct
41	Correct	24 ms	21640 KB	Output is correct
42	Correct	16 ms	12380 KB	Output is correct
43	Correct	6 ms	3164 KB	Output is correct
44	Correct	16 ms	12440 KB	Output is correct
45	Correct	4 ms	3164 KB	Output is correct
46	Correct	3 ms	3164 KB	Output is correct
47	Correct	4 ms	3164 KB	Output is correct
48	Correct	4 ms	3164 KB	Output is correct
49	Correct	16 ms	12304 KB	Output is correct
50	Correct	14 ms	12380 KB	Output is correct
51	Correct	14 ms	12380 KB	Output is correct
52	Correct	32 ms	22004 KB	Output is correct
53	Correct	31 ms	21724 KB	Output is correct
54	Correct	6 ms	3672 KB	Output is correct
55	Correct	6 ms	3572 KB	Output is correct
56	Correct	24 ms	19412 KB	Output is correct
57	Correct	38 ms	21388 KB	Output is correct
58	Correct	31 ms	21460 KB	Output is correct
59	Correct	25 ms	21200 KB	Output is correct
60	Correct	25 ms	21456 KB	Output is correct
61	Correct	38 ms	22576 KB	Output is correct
62	Correct	23 ms	20692 KB	Output is correct
63	Correct	44 ms	21452 KB	Output is correct
64	Correct	26 ms	21456 KB	Output is correct

Subtask #5
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2904 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	2 ms	2652 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	2 ms	2652 KB	Output is correct
14	Correct	1 ms	2652 KB	Output is correct
15	Correct	1 ms	2648 KB	Output is correct
16	Correct	2 ms	2652 KB	Output is correct
17	Correct	1 ms	2648 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2648 KB	Output is correct
21	Correct	2 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	2 ms	2652 KB	Output is correct
27	Correct	2 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	1 ms	2652 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2652 KB	Output is correct
32	Correct	2 ms	2652 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	2 ms	3164 KB	Output is correct
35	Correct	2 ms	3164 KB	Output is correct
36	Correct	1 ms	2648 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	3 ms	3076 KB	Output is correct
39	Correct	2 ms	3200 KB	Output is correct
40	Correct	2 ms	3164 KB	Output is correct
41	Correct	3 ms	3084 KB	Output is correct
42	Correct	2 ms	3164 KB	Output is correct
43	Correct	2 ms	3164 KB	Output is correct
44	Correct	2 ms	3164 KB	Output is correct
45	Correct	1 ms	3164 KB	Output is correct
46	Correct	2 ms	3164 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	2 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	2 ms	2652 KB	Output is correct
51	Correct	2 ms	2648 KB	Output is correct
52	Correct	2 ms	2652 KB	Output is correct
53	Correct	2 ms	3164 KB	Output is correct
54	Correct	3 ms	3164 KB	Output is correct
55	Correct	2 ms	2652 KB	Output is correct
56	Correct	2 ms	2652 KB	Output is correct
57	Correct	2 ms	3160 KB	Output is correct
58	Correct	2 ms	3164 KB	Output is correct
59	Correct	2 ms	3164 KB	Output is correct
60	Correct	2 ms	3164 KB	Output is correct
61	Correct	2 ms	3076 KB	Output is correct
62	Correct	2 ms	3164 KB	Output is correct
63	Correct	3 ms	3164 KB	Output is correct
64	Correct	2 ms	2908 KB	Output is correct
65	Correct	2 ms	2908 KB	Output is correct
66	Correct	18 ms	12352 KB	Output is correct
67	Correct	6 ms	3164 KB	Output is correct
68	Correct	17 ms	12248 KB	Output is correct
69	Correct	5 ms	3272 KB	Output is correct
70	Correct	16 ms	12252 KB	Output is correct
71	Correct	17 ms	12380 KB	Output is correct
72	Correct	18 ms	12380 KB	Output is correct
73	Correct	17 ms	12376 KB	Output is correct
74	Correct	16 ms	12376 KB	Output is correct
75	Correct	19 ms	12584 KB	Output is correct
76	Correct	35 ms	21836 KB	Output is correct
77	Correct	34 ms	21856 KB	Output is correct
78	Correct	32 ms	21916 KB	Output is correct
79	Correct	32 ms	21952 KB	Output is correct
80	Correct	6 ms	3676 KB	Output is correct
81	Correct	6 ms	3568 KB	Output is correct
82	Correct	7 ms	3740 KB	Output is correct
83	Correct	6 ms	3676 KB	Output is correct
84	Correct	6 ms	3696 KB	Output is correct
85	Correct	11 ms	3928 KB	Output is correct
86	Correct	6 ms	3676 KB	Output is correct
87	Correct	6 ms	3676 KB	Output is correct
88	Correct	11 ms	3572 KB	Output is correct
89	Correct	27 ms	21448 KB	Output is correct
90	Correct	29 ms	21452 KB	Output is correct
91	Correct	26 ms	21448 KB	Output is correct
92	Correct	27 ms	21448 KB	Output is correct
93	Correct	27 ms	21448 KB	Output is correct
94	Correct	38 ms	21452 KB	Output is correct
95	Correct	8 ms	8284 KB	Output is correct
96	Correct	14 ms	12112 KB	Output is correct
97	Correct	24 ms	19668 KB	Output is correct
98	Correct	44 ms	21452 KB	Output is correct
99	Correct	5 ms	4444 KB	Output is correct
100	Correct	6 ms	6556 KB	Output is correct
101	Correct	14 ms	11996 KB	Output is correct
102	Correct	35 ms	21452 KB	Output is correct
103	Correct	49 ms	21200 KB	Output is correct
104	Correct	38 ms	21460 KB	Output is correct
105	Correct	30 ms	22616 KB	Output is correct
106	Correct	24 ms	21640 KB	Output is correct
107	Correct	16 ms	12380 KB	Output is correct
108	Correct	6 ms	3164 KB	Output is correct
109	Correct	16 ms	12440 KB	Output is correct
110	Correct	4 ms	3164 KB	Output is correct
111	Correct	3 ms	3164 KB	Output is correct
112	Correct	4 ms	3164 KB	Output is correct
113	Correct	4 ms	3164 KB	Output is correct
114	Correct	16 ms	12304 KB	Output is correct
115	Correct	14 ms	12380 KB	Output is correct
116	Correct	14 ms	12380 KB	Output is correct
117	Correct	32 ms	22004 KB	Output is correct
118	Correct	31 ms	21724 KB	Output is correct
119	Correct	6 ms	3672 KB	Output is correct
120	Correct	6 ms	3572 KB	Output is correct
121	Correct	24 ms	19412 KB	Output is correct
122	Correct	38 ms	21388 KB	Output is correct
123	Correct	31 ms	21460 KB	Output is correct
124	Correct	25 ms	21200 KB	Output is correct
125	Correct	25 ms	21456 KB	Output is correct
126	Correct	38 ms	22576 KB	Output is correct
127	Correct	23 ms	20692 KB	Output is correct
128	Correct	44 ms	21452 KB	Output is correct
129	Correct	26 ms	21456 KB	Output is correct
130	Correct	1 ms	2652 KB	Output is correct
131	Correct	1 ms	2652 KB	Output is correct
132	Correct	1 ms	2652 KB	Output is correct
133	Correct	31 ms	21732 KB	Output is correct
134	Correct	29 ms	21968 KB	Output is correct
135	Correct	31 ms	21844 KB	Output is correct
136	Correct	6 ms	3676 KB	Output is correct
137	Correct	5 ms	3700 KB	Output is correct
138	Correct	7 ms	3704 KB	Output is correct
139	Correct	10 ms	3676 KB	Output is correct
140	Correct	5 ms	3676 KB	Output is correct
141	Correct	5 ms	3672 KB	Output is correct
142	Correct	34 ms	21824 KB	Output is correct
143	Correct	51 ms	21844 KB	Output is correct
144	Correct	42 ms	21356 KB	Output is correct
145	Correct	25 ms	19528 KB	Output is correct
146	Correct	26 ms	21368 KB	Output is correct
147	Correct	46 ms	21200 KB	Output is correct
148	Correct	46 ms	22864 KB	Output is correct
149	Correct	70 ms	22612 KB	Output is correct
150	Correct	43 ms	22612 KB	Output is correct
151	Correct	36 ms	21604 KB	Output is correct
152	Correct	35 ms	21568 KB	Output is correct
153	Correct	27 ms	21452 KB	Output is correct
154	Correct	29 ms	21448 KB	Output is correct
155	Correct	37 ms	21452 KB	Output is correct
156	Correct	24 ms	21452 KB	Output is correct
157	Correct	25 ms	21404 KB	Output is correct
158	Correct	25 ms	21452 KB	Output is correct
159	Correct	25 ms	21448 KB	Output is correct
160	Correct	27 ms	21452 KB	Output is correct

답안 #1002688

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 25.0 / 25.0

Subtask #3 31.0 / 31.0

Subtask #4 18.0 / 18.0

Subtask #5 19.0 / 19.0

Subtask #1
7.0 / 7.0

Subtask #2
25.0 / 25.0

Subtask #3
31.0 / 31.0

Subtask #4
18.0 / 18.0

Subtask #5
19.0 / 19.0