답안 #1041983

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1041983	2024-08-02T11:41:15 Z	PM1	Subtree (INOI20_subtree)	C++17	100 / 100	31 ms	21588 KB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxn=1e5+5,M=1e9+7;
int n,m,par[mxn],h[mxn],dis[mxn],mark[mxn];
vector<int>v[mxn];
ll dp[mxn][2][2][2],ans=0;
void dfs(int z){
	mark[z]=1;
	ll res=1;
	int c=0;
	for(auto i:v[z]){
		if(par[z]!=i && !mark[i]){
			par[i]=z;
			dis[i]=dis[z]+1;
			dfs(i);
			if(h[i]>dis[z] || h[i]==0){
				res*=(dp[i][1][1][0]+1);
				res%=M;
			}
			else{
				c=i;
				h[z]=h[i];
			}
		}
		else if(mark[i] && par[z]!=i && h[z]==0){
			h[z]=dis[i];
		}
	}
	if(c==0){
		dp[z][1][1][0]=res;
		dp[z][0][0][0]=1;
		ans+=dp[z][1][1][0];
		ans%=M;
		//cout<<"F"<<" "<<z<<" "<<ans<<'\n';
		return ;
	}
	dp[z][0][0][0]=1;
	dp[z][0][1][0]=((dp[c][0][0][0]+dp[c][0][1][0])*res)%M;
	//dp[z][0][0][1]=(dp[c][0][0][1]+dp[0][1][0])%M;
	dp[z][1][1][0]=(dp[c][1][1][0]*res)%M;
	dp[z][1][0][0]=(dp[c][1][1][0]+dp[c][1][0][0])%M;
	dp[z][1][1][1]=((dp[c][1][1][1]+dp[c][1][0][0])*res)%M;
	ans+=dp[z][1][1][0]+dp[z][0][1][0];
	if(h[z]==dis[z]){
		ans+=dp[z][1][1][1];
		ans-=dp[z][1][1][0];
		dp[z][1][1][0]=(dp[z][1][1][1]+dp[z][0][1][0])%M;
	}
	ans%=M;
	//cout<<z<<" "<<ans<<" "<<dp[z][1][0][0]<<h[z]<<'\n';
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		int x,y;
		cin>>x>>y;
		v[x].push_back(y);
		v[y].push_back(x);
	}
	dis[1]=1;
	dfs(1);
	ans+=M;
	ans%=M;
	cout<<ans;
	return 0;
}

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4696 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	0 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4788 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4784 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4792 KB	Output is correct
30	Correct	1 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4700 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	1 ms	4700 KB	Output is correct
36	Correct	0 ms	4700 KB	Output is correct
37	Correct	1 ms	4700 KB	Output is correct
38	Correct	1 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	1 ms	4700 KB	Output is correct
44	Correct	1 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	1 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	1 ms	4700 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	1 ms	4700 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	4 ms	7512 KB	Output is correct
3	Correct	22 ms	14620 KB	Output is correct
4	Correct	26 ms	14384 KB	Output is correct
5	Correct	21 ms	14428 KB	Output is correct
6	Correct	24 ms	14468 KB	Output is correct
7	Correct	28 ms	20056 KB	Output is correct
8	Correct	23 ms	18008 KB	Output is correct
9	Correct	23 ms	18012 KB	Output is correct
10	Correct	18 ms	14940 KB	Output is correct
11	Correct	21 ms	14804 KB	Output is correct
12	Correct	26 ms	14432 KB	Output is correct
13	Correct	23 ms	14428 KB	Output is correct
14	Correct	21 ms	17148 KB	Output is correct
15	Correct	27 ms	20820 KB	Output is correct
16	Correct	27 ms	21588 KB	Output is correct
17	Correct	23 ms	14428 KB	Output is correct
18	Correct	25 ms	14428 KB	Output is correct
19	Correct	23 ms	14424 KB	Output is correct
20	Correct	20 ms	14804 KB	Output is correct
21	Correct	19 ms	15028 KB	Output is correct
22	Correct	21 ms	14940 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4696 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	0 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4788 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4784 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4792 KB	Output is correct
30	Correct	1 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4700 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	1 ms	4700 KB	Output is correct
36	Correct	0 ms	4700 KB	Output is correct
37	Correct	1 ms	4700 KB	Output is correct
38	Correct	1 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	1 ms	4700 KB	Output is correct
44	Correct	1 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	1 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	1 ms	4700 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	1 ms	4700 KB	Output is correct
52	Correct	2 ms	7256 KB	Output is correct
53	Correct	2 ms	7260 KB	Output is correct
54	Correct	2 ms	7260 KB	Output is correct
55	Correct	2 ms	7260 KB	Output is correct
56	Correct	2 ms	7516 KB	Output is correct
57	Correct	2 ms	7200 KB	Output is correct
58	Correct	2 ms	7256 KB	Output is correct
59	Correct	2 ms	7224 KB	Output is correct
60	Correct	1 ms	7260 KB	Output is correct
61	Correct	3 ms	7260 KB	Output is correct
62	Correct	2 ms	7260 KB	Output is correct
63	Correct	1 ms	7260 KB	Output is correct
64	Correct	1 ms	7260 KB	Output is correct
65	Correct	2 ms	7260 KB	Output is correct
66	Correct	2 ms	7260 KB	Output is correct
67	Correct	2 ms	7260 KB	Output is correct
68	Correct	2 ms	7516 KB	Output is correct
69	Correct	2 ms	7284 KB	Output is correct
70	Correct	2 ms	7260 KB	Output is correct
71	Correct	2 ms	7260 KB	Output is correct
72	Correct	2 ms	7260 KB	Output is correct
73	Correct	3 ms	7260 KB	Output is correct
74	Correct	2 ms	7260 KB	Output is correct
75	Correct	2 ms	7260 KB	Output is correct
76	Correct	2 ms	7260 KB	Output is correct
77	Correct	2 ms	7516 KB	Output is correct
78	Correct	2 ms	7268 KB	Output is correct
79	Correct	3 ms	7516 KB	Output is correct
80	Correct	2 ms	7104 KB	Output is correct
81	Correct	2 ms	7348 KB	Output is correct
82	Correct	2 ms	7260 KB	Output is correct
83	Correct	2 ms	7260 KB	Output is correct

Subtask #4
50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4696 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	0 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4788 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4700 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4784 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4700 KB	Output is correct
25	Correct	1 ms	4696 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4700 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	1 ms	4792 KB	Output is correct
30	Correct	1 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4700 KB	Output is correct
33	Correct	1 ms	4700 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	1 ms	4700 KB	Output is correct
36	Correct	0 ms	4700 KB	Output is correct
37	Correct	1 ms	4700 KB	Output is correct
38	Correct	1 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	1 ms	4700 KB	Output is correct
44	Correct	1 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	1 ms	4700 KB	Output is correct
47	Correct	1 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	1 ms	4700 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	1 ms	4700 KB	Output is correct
52	Correct	1 ms	4696 KB	Output is correct
53	Correct	4 ms	7512 KB	Output is correct
54	Correct	22 ms	14620 KB	Output is correct
55	Correct	26 ms	14384 KB	Output is correct
56	Correct	21 ms	14428 KB	Output is correct
57	Correct	24 ms	14468 KB	Output is correct
58	Correct	28 ms	20056 KB	Output is correct
59	Correct	23 ms	18008 KB	Output is correct
60	Correct	23 ms	18012 KB	Output is correct
61	Correct	18 ms	14940 KB	Output is correct
62	Correct	21 ms	14804 KB	Output is correct
63	Correct	26 ms	14432 KB	Output is correct
64	Correct	23 ms	14428 KB	Output is correct
65	Correct	21 ms	17148 KB	Output is correct
66	Correct	27 ms	20820 KB	Output is correct
67	Correct	27 ms	21588 KB	Output is correct
68	Correct	23 ms	14428 KB	Output is correct
69	Correct	25 ms	14428 KB	Output is correct
70	Correct	23 ms	14424 KB	Output is correct
71	Correct	20 ms	14804 KB	Output is correct
72	Correct	19 ms	15028 KB	Output is correct
73	Correct	21 ms	14940 KB	Output is correct
74	Correct	2 ms	7256 KB	Output is correct
75	Correct	2 ms	7260 KB	Output is correct
76	Correct	2 ms	7260 KB	Output is correct
77	Correct	2 ms	7260 KB	Output is correct
78	Correct	2 ms	7516 KB	Output is correct
79	Correct	2 ms	7200 KB	Output is correct
80	Correct	2 ms	7256 KB	Output is correct
81	Correct	2 ms	7224 KB	Output is correct
82	Correct	1 ms	7260 KB	Output is correct
83	Correct	3 ms	7260 KB	Output is correct
84	Correct	2 ms	7260 KB	Output is correct
85	Correct	1 ms	7260 KB	Output is correct
86	Correct	1 ms	7260 KB	Output is correct
87	Correct	2 ms	7260 KB	Output is correct
88	Correct	2 ms	7260 KB	Output is correct
89	Correct	2 ms	7260 KB	Output is correct
90	Correct	2 ms	7516 KB	Output is correct
91	Correct	2 ms	7284 KB	Output is correct
92	Correct	2 ms	7260 KB	Output is correct
93	Correct	2 ms	7260 KB	Output is correct
94	Correct	2 ms	7260 KB	Output is correct
95	Correct	3 ms	7260 KB	Output is correct
96	Correct	2 ms	7260 KB	Output is correct
97	Correct	2 ms	7260 KB	Output is correct
98	Correct	2 ms	7260 KB	Output is correct
99	Correct	2 ms	7516 KB	Output is correct
100	Correct	2 ms	7268 KB	Output is correct
101	Correct	3 ms	7516 KB	Output is correct
102	Correct	2 ms	7104 KB	Output is correct
103	Correct	2 ms	7348 KB	Output is correct
104	Correct	2 ms	7260 KB	Output is correct
105	Correct	2 ms	7260 KB	Output is correct
106	Correct	23 ms	15192 KB	Output is correct
107	Correct	24 ms	14928 KB	Output is correct
108	Correct	22 ms	14940 KB	Output is correct
109	Correct	23 ms	15196 KB	Output is correct
110	Correct	22 ms	15176 KB	Output is correct
111	Correct	23 ms	15964 KB	Output is correct
112	Correct	26 ms	19288 KB	Output is correct
113	Correct	23 ms	14968 KB	Output is correct
114	Correct	26 ms	14940 KB	Output is correct
115	Correct	19 ms	14804 KB	Output is correct
116	Correct	27 ms	20152 KB	Output is correct
117	Correct	28 ms	19536 KB	Output is correct
118	Correct	17 ms	15828 KB	Output is correct
119	Correct	23 ms	15032 KB	Output is correct
120	Correct	26 ms	14936 KB	Output is correct
121	Correct	26 ms	14940 KB	Output is correct
122	Correct	25 ms	15196 KB	Output is correct
123	Correct	17 ms	15156 KB	Output is correct
124	Correct	19 ms	14936 KB	Output is correct
125	Correct	17 ms	14796 KB	Output is correct
126	Correct	21 ms	14936 KB	Output is correct
127	Correct	21 ms	14940 KB	Output is correct
128	Correct	23 ms	15040 KB	Output is correct
129	Correct	30 ms	15184 KB	Output is correct
130	Correct	19 ms	15196 KB	Output is correct
131	Correct	20 ms	15912 KB	Output is correct
132	Correct	29 ms	19292 KB	Output is correct
133	Correct	26 ms	15212 KB	Output is correct
134	Correct	22 ms	14968 KB	Output is correct
135	Correct	17 ms	14804 KB	Output is correct
136	Correct	27 ms	18788 KB	Output is correct
137	Correct	27 ms	19032 KB	Output is correct
138	Correct	20 ms	15828 KB	Output is correct
139	Correct	25 ms	15032 KB	Output is correct
140	Correct	23 ms	14940 KB	Output is correct
141	Correct	25 ms	14932 KB	Output is correct
142	Correct	25 ms	14940 KB	Output is correct
143	Correct	21 ms	14948 KB	Output is correct
144	Correct	21 ms	15072 KB	Output is correct
145	Correct	19 ms	14800 KB	Output is correct
146	Correct	27 ms	14836 KB	Output is correct
147	Correct	21 ms	14940 KB	Output is correct
148	Correct	24 ms	15124 KB	Output is correct
149	Correct	31 ms	15900 KB	Output is correct
150	Correct	28 ms	20564 KB	Output is correct
151	Correct	24 ms	14940 KB	Output is correct
152	Correct	26 ms	15196 KB	Output is correct
153	Correct	28 ms	15196 KB	Output is correct
154	Correct	22 ms	15964 KB	Output is correct
155	Correct	21 ms	15196 KB	Output is correct
156	Correct	24 ms	19540 KB	Output is correct
157	Correct	26 ms	18772 KB	Output is correct
158	Correct	30 ms	18264 KB	Output is correct
159	Correct	21 ms	14936 KB	Output is correct
160	Correct	26 ms	20052 KB	Output is correct
161	Correct	22 ms	14940 KB	Output is correct
162	Correct	25 ms	15388 KB	Output is correct

답안 #1041983

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 12.0 / 12.0

Subtask #3 30.0 / 30.0

Subtask #4 50.0 / 50.0

Subtask #1
8.0 / 8.0

Subtask #2
12.0 / 12.0

Subtask #3
30.0 / 30.0

Subtask #4
50.0 / 50.0