답안 #1003298

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1003298	2024-06-20T08:42:17 Z	vjudge1	Subtree (INOI20_subtree)	C++17	50 / 100	2000 ms	30976 KB

Main

#include <bits/stdc++.h>
using namespace std;
const int N=1e5+10;
vector<int> g[N];
vector<int> bridges[N];
vector<int> notBridges[N];
int add[N], depth[N];
bool vis[N];
vector<vector<int>> cycles;
int getCycle[N];
void dfsAdd(int at, int p) {
  vis[at]=1;
  for(int to:g[at]) {
    if(to==p)continue;
    if(vis[to] == 1) 
    {
      if(depth[at] > depth[to]) {
        add[at]++;
        add[to]--;
        notBridges[to].push_back(at);
        notBridges[at].push_back(to);
      }
      continue;
    }
    depth[to]=depth[at]+1;
    dfsAdd(to, at);
  }
}
void dfsGetBridges(int at, int p) {
  vis[at]=1;
  for(int to:g[at]) {
    if(vis[to])continue;
    dfsGetBridges(to, at);
    add[at]+=add[to];
  }
  if(p==0)return;
  if(add[at] == 0) {
    bridges[at].push_back(p);
    bridges[p].push_back(at);
  }
  else {
    notBridges[at].push_back(p);
    notBridges[p].push_back(at);
  }
}
vector<int> tempcycle;
void dfsGetCycles(int at) {
  tempcycle.push_back(at);
  vis[at]=1;
  for(int to:notBridges[at]) {
    if(vis[to])continue;
    dfsGetCycles(to);
  }
}
long long dp[N], tmpdp[N];
const long long mod = 1e9+7;
long long ans=0;
void dfsCalc(int c, int cc) {
  vis[c]=1;
  for(int at:cycles[c]) {
    dp[at]=1;
    for(int to:g[at]) {
      if(!vis[getCycle[to]]) {
        dfsCalc(getCycle[to], to);
        dp[at] = (dp[at]*(dp[to]+1))%mod;
        assert(dp[to]!=0);
      }
    }
  }
  if(cycles[c].size()==1){
    ans+=dp[cycles[c][0]];
    ans%=mod;
    return;
  }
  for(int i = 0;i<cycles[c].size();i++) {
    long long prod = 1;
    int k =i;
    int idx=-1, cnt=0;
    int sz=0;
    while(1) {
      sz++;
      if(sz == cycles[c].size())break;
      if(cycles[c][k] == cc) {
        idx=cnt;
      }
      prod = (prod*dp[cycles[c][k]])%mod;
      ans=(ans+prod)%mod;
      if(idx != -1) {
        tmpdp[cc]=(tmpdp[cc]+prod)%mod;
      }
      k=(k+1)%cycles[c].size();
    }
  }
  for(int i:cycles[c]) {
    dp[i]=tmpdp[i];
  }
}
int main () {
  cin.tie(0)->sync_with_stdio(0);
  int n, m;
  cin >> n >> m;
  for(int i = 0;i<m;i++) {
    int u, v;
    cin >> u >> v;
    g[u].push_back(v);
    g[v].push_back(u);
  }
  dfsAdd(1, 0);
  memset(vis, 0, sizeof vis);
  dfsGetBridges(1, 0);
  memset(vis, 0, sizeof vis);
  for(int i = 1;i<=n;i++) {
    if(vis[i] == 0) {
      dfsGetCycles(i);
      for(int c:tempcycle) {
        getCycle[c] = cycles.size();
      }
      cycles.push_back(tempcycle);
      tempcycle.clear();
    }
  }
  memset(vis, 0, sizeof vis);
  dfsCalc(0, -1);
  cout << ans%mod << "\n";
}

Compilation message

Main.cpp: In function 'void dfsCalc(int, int)':
Main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |   for(int i = 0;i<cycles[c].size();i++) {
      |                 ~^~~~~~~~~~~~~~~~~
Main.cpp:83:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |       if(sz == cycles[c].size())break;
      |          ~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	3 ms	7516 KB	Output is correct
4	Correct	2 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7516 KB	Output is correct
7	Correct	2 ms	7516 KB	Output is correct
8	Correct	2 ms	7516 KB	Output is correct
9	Correct	3 ms	7420 KB	Output is correct
10	Correct	3 ms	7596 KB	Output is correct
11	Correct	3 ms	7632 KB	Output is correct
12	Correct	3 ms	7516 KB	Output is correct
13	Correct	3 ms	7516 KB	Output is correct
14	Correct	3 ms	7516 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7516 KB	Output is correct
17	Correct	4 ms	7516 KB	Output is correct
18	Correct	4 ms	7636 KB	Output is correct
19	Correct	4 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	3 ms	7512 KB	Output is correct
22	Correct	3 ms	7560 KB	Output is correct
23	Correct	3 ms	7516 KB	Output is correct
24	Correct	3 ms	7632 KB	Output is correct
25	Correct	3 ms	7516 KB	Output is correct
26	Correct	3 ms	7516 KB	Output is correct
27	Correct	3 ms	7516 KB	Output is correct
28	Correct	3 ms	7516 KB	Output is correct
29	Correct	2 ms	7516 KB	Output is correct
30	Correct	3 ms	7516 KB	Output is correct
31	Correct	3 ms	7516 KB	Output is correct
32	Correct	3 ms	7516 KB	Output is correct
33	Correct	3 ms	7516 KB	Output is correct
34	Correct	3 ms	7516 KB	Output is correct
35	Correct	3 ms	7600 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	3 ms	7592 KB	Output is correct
38	Correct	3 ms	7516 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	4 ms	7516 KB	Output is correct
41	Correct	3 ms	7516 KB	Output is correct
42	Correct	3 ms	7516 KB	Output is correct
43	Correct	3 ms	7516 KB	Output is correct
44	Correct	3 ms	7512 KB	Output is correct
45	Correct	2 ms	7516 KB	Output is correct
46	Correct	3 ms	7516 KB	Output is correct
47	Correct	3 ms	7516 KB	Output is correct
48	Correct	3 ms	7516 KB	Output is correct
49	Correct	3 ms	7516 KB	Output is correct
50	Correct	3 ms	7512 KB	Output is correct
51	Correct	3 ms	7516 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7512 KB	Output is correct
2	Correct	7 ms	9112 KB	Output is correct
3	Correct	56 ms	22620 KB	Output is correct
4	Correct	54 ms	22540 KB	Output is correct
5	Correct	52 ms	22608 KB	Output is correct
6	Correct	50 ms	22528 KB	Output is correct
7	Correct	63 ms	29188 KB	Output is correct
8	Correct	60 ms	26640 KB	Output is correct
9	Correct	58 ms	26628 KB	Output is correct
10	Correct	45 ms	23300 KB	Output is correct
11	Correct	43 ms	23008 KB	Output is correct
12	Correct	57 ms	22532 KB	Output is correct
13	Correct	61 ms	22468 KB	Output is correct
14	Correct	51 ms	25664 KB	Output is correct
15	Correct	65 ms	30212 KB	Output is correct
16	Correct	62 ms	30976 KB	Output is correct
17	Correct	63 ms	22276 KB	Output is correct
18	Correct	59 ms	22532 KB	Output is correct
19	Correct	70 ms	22528 KB	Output is correct
20	Correct	49 ms	22596 KB	Output is correct
21	Correct	43 ms	22796 KB	Output is correct
22	Correct	41 ms	22788 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	3 ms	7516 KB	Output is correct
4	Correct	2 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7516 KB	Output is correct
7	Correct	2 ms	7516 KB	Output is correct
8	Correct	2 ms	7516 KB	Output is correct
9	Correct	3 ms	7420 KB	Output is correct
10	Correct	3 ms	7596 KB	Output is correct
11	Correct	3 ms	7632 KB	Output is correct
12	Correct	3 ms	7516 KB	Output is correct
13	Correct	3 ms	7516 KB	Output is correct
14	Correct	3 ms	7516 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7516 KB	Output is correct
17	Correct	4 ms	7516 KB	Output is correct
18	Correct	4 ms	7636 KB	Output is correct
19	Correct	4 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	3 ms	7512 KB	Output is correct
22	Correct	3 ms	7560 KB	Output is correct
23	Correct	3 ms	7516 KB	Output is correct
24	Correct	3 ms	7632 KB	Output is correct
25	Correct	3 ms	7516 KB	Output is correct
26	Correct	3 ms	7516 KB	Output is correct
27	Correct	3 ms	7516 KB	Output is correct
28	Correct	3 ms	7516 KB	Output is correct
29	Correct	2 ms	7516 KB	Output is correct
30	Correct	3 ms	7516 KB	Output is correct
31	Correct	3 ms	7516 KB	Output is correct
32	Correct	3 ms	7516 KB	Output is correct
33	Correct	3 ms	7516 KB	Output is correct
34	Correct	3 ms	7516 KB	Output is correct
35	Correct	3 ms	7600 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	3 ms	7592 KB	Output is correct
38	Correct	3 ms	7516 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	4 ms	7516 KB	Output is correct
41	Correct	3 ms	7516 KB	Output is correct
42	Correct	3 ms	7516 KB	Output is correct
43	Correct	3 ms	7516 KB	Output is correct
44	Correct	3 ms	7512 KB	Output is correct
45	Correct	2 ms	7516 KB	Output is correct
46	Correct	3 ms	7516 KB	Output is correct
47	Correct	3 ms	7516 KB	Output is correct
48	Correct	3 ms	7516 KB	Output is correct
49	Correct	3 ms	7516 KB	Output is correct
50	Correct	3 ms	7512 KB	Output is correct
51	Correct	3 ms	7516 KB	Output is correct
52	Correct	4 ms	8280 KB	Output is correct
53	Correct	4 ms	8284 KB	Output is correct
54	Correct	5 ms	8348 KB	Output is correct
55	Correct	4 ms	8540 KB	Output is correct
56	Correct	6 ms	8540 KB	Output is correct
57	Correct	4 ms	8284 KB	Output is correct
58	Correct	4 ms	8284 KB	Output is correct
59	Correct	4 ms	8476 KB	Output is correct
60	Correct	4 ms	8284 KB	Output is correct
61	Correct	5 ms	8284 KB	Output is correct
62	Correct	5 ms	8300 KB	Output is correct
63	Correct	4 ms	8284 KB	Output is correct
64	Correct	5 ms	8284 KB	Output is correct
65	Correct	4 ms	8284 KB	Output is correct
66	Correct	9 ms	8288 KB	Output is correct
67	Correct	5 ms	8540 KB	Output is correct
68	Correct	7 ms	8540 KB	Output is correct
69	Correct	4 ms	8284 KB	Output is correct
70	Correct	4 ms	8284 KB	Output is correct
71	Correct	6 ms	8280 KB	Output is correct
72	Correct	5 ms	8284 KB	Output is correct
73	Correct	4 ms	8432 KB	Output is correct
74	Correct	4 ms	8028 KB	Output is correct
75	Correct	4 ms	8332 KB	Output is correct
76	Correct	5 ms	8284 KB	Output is correct
77	Correct	6 ms	8540 KB	Output is correct
78	Correct	15 ms	8280 KB	Output is correct
79	Correct	17 ms	8280 KB	Output is correct
80	Correct	7 ms	8028 KB	Output is correct
81	Correct	7 ms	8388 KB	Output is correct
82	Correct	7 ms	8160 KB	Output is correct
83	Correct	8 ms	8180 KB	Output is correct

Subtask #4
0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	3 ms	7516 KB	Output is correct
4	Correct	2 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7516 KB	Output is correct
7	Correct	2 ms	7516 KB	Output is correct
8	Correct	2 ms	7516 KB	Output is correct
9	Correct	3 ms	7420 KB	Output is correct
10	Correct	3 ms	7596 KB	Output is correct
11	Correct	3 ms	7632 KB	Output is correct
12	Correct	3 ms	7516 KB	Output is correct
13	Correct	3 ms	7516 KB	Output is correct
14	Correct	3 ms	7516 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7516 KB	Output is correct
17	Correct	4 ms	7516 KB	Output is correct
18	Correct	4 ms	7636 KB	Output is correct
19	Correct	4 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	3 ms	7512 KB	Output is correct
22	Correct	3 ms	7560 KB	Output is correct
23	Correct	3 ms	7516 KB	Output is correct
24	Correct	3 ms	7632 KB	Output is correct
25	Correct	3 ms	7516 KB	Output is correct
26	Correct	3 ms	7516 KB	Output is correct
27	Correct	3 ms	7516 KB	Output is correct
28	Correct	3 ms	7516 KB	Output is correct
29	Correct	2 ms	7516 KB	Output is correct
30	Correct	3 ms	7516 KB	Output is correct
31	Correct	3 ms	7516 KB	Output is correct
32	Correct	3 ms	7516 KB	Output is correct
33	Correct	3 ms	7516 KB	Output is correct
34	Correct	3 ms	7516 KB	Output is correct
35	Correct	3 ms	7600 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	3 ms	7592 KB	Output is correct
38	Correct	3 ms	7516 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	4 ms	7516 KB	Output is correct
41	Correct	3 ms	7516 KB	Output is correct
42	Correct	3 ms	7516 KB	Output is correct
43	Correct	3 ms	7516 KB	Output is correct
44	Correct	3 ms	7512 KB	Output is correct
45	Correct	2 ms	7516 KB	Output is correct
46	Correct	3 ms	7516 KB	Output is correct
47	Correct	3 ms	7516 KB	Output is correct
48	Correct	3 ms	7516 KB	Output is correct
49	Correct	3 ms	7516 KB	Output is correct
50	Correct	3 ms	7512 KB	Output is correct
51	Correct	3 ms	7516 KB	Output is correct
52	Correct	3 ms	7512 KB	Output is correct
53	Correct	7 ms	9112 KB	Output is correct
54	Correct	56 ms	22620 KB	Output is correct
55	Correct	54 ms	22540 KB	Output is correct
56	Correct	52 ms	22608 KB	Output is correct
57	Correct	50 ms	22528 KB	Output is correct
58	Correct	63 ms	29188 KB	Output is correct
59	Correct	60 ms	26640 KB	Output is correct
60	Correct	58 ms	26628 KB	Output is correct
61	Correct	45 ms	23300 KB	Output is correct
62	Correct	43 ms	23008 KB	Output is correct
63	Correct	57 ms	22532 KB	Output is correct
64	Correct	61 ms	22468 KB	Output is correct
65	Correct	51 ms	25664 KB	Output is correct
66	Correct	65 ms	30212 KB	Output is correct
67	Correct	62 ms	30976 KB	Output is correct
68	Correct	63 ms	22276 KB	Output is correct
69	Correct	59 ms	22532 KB	Output is correct
70	Correct	70 ms	22528 KB	Output is correct
71	Correct	49 ms	22596 KB	Output is correct
72	Correct	43 ms	22796 KB	Output is correct
73	Correct	41 ms	22788 KB	Output is correct
74	Correct	4 ms	8280 KB	Output is correct
75	Correct	4 ms	8284 KB	Output is correct
76	Correct	5 ms	8348 KB	Output is correct
77	Correct	4 ms	8540 KB	Output is correct
78	Correct	6 ms	8540 KB	Output is correct
79	Correct	4 ms	8284 KB	Output is correct
80	Correct	4 ms	8284 KB	Output is correct
81	Correct	4 ms	8476 KB	Output is correct
82	Correct	4 ms	8284 KB	Output is correct
83	Correct	5 ms	8284 KB	Output is correct
84	Correct	5 ms	8300 KB	Output is correct
85	Correct	4 ms	8284 KB	Output is correct
86	Correct	5 ms	8284 KB	Output is correct
87	Correct	4 ms	8284 KB	Output is correct
88	Correct	9 ms	8288 KB	Output is correct
89	Correct	5 ms	8540 KB	Output is correct
90	Correct	7 ms	8540 KB	Output is correct
91	Correct	4 ms	8284 KB	Output is correct
92	Correct	4 ms	8284 KB	Output is correct
93	Correct	6 ms	8280 KB	Output is correct
94	Correct	5 ms	8284 KB	Output is correct
95	Correct	4 ms	8432 KB	Output is correct
96	Correct	4 ms	8028 KB	Output is correct
97	Correct	4 ms	8332 KB	Output is correct
98	Correct	5 ms	8284 KB	Output is correct
99	Correct	6 ms	8540 KB	Output is correct
100	Correct	15 ms	8280 KB	Output is correct
101	Correct	17 ms	8280 KB	Output is correct
102	Correct	7 ms	8028 KB	Output is correct
103	Correct	7 ms	8388 KB	Output is correct
104	Correct	7 ms	8160 KB	Output is correct
105	Correct	8 ms	8180 KB	Output is correct
106	Correct	62 ms	23208 KB	Output is correct
107	Correct	60 ms	23044 KB	Output is correct
108	Correct	69 ms	22784 KB	Output is correct
109	Correct	82 ms	22784 KB	Output is correct
110	Correct	54 ms	23604 KB	Output is correct
111	Correct	45 ms	24620 KB	Output is correct
112	Correct	77 ms	26632 KB	Output is correct
113	Correct	64 ms	20744 KB	Output is correct
114	Correct	63 ms	22216 KB	Output is correct
115	Correct	38 ms	23100 KB	Output is correct
116	Correct	73 ms	27140 KB	Output is correct
117	Correct	62 ms	26376 KB	Output is correct
118	Correct	40 ms	24388 KB	Output is correct
119	Correct	71 ms	21000 KB	Output is correct
120	Correct	64 ms	21000 KB	Output is correct
121	Correct	61 ms	21344 KB	Output is correct
122	Correct	91 ms	21588 KB	Output is correct
123	Correct	52 ms	23312 KB	Output is correct
124	Correct	39 ms	22916 KB	Output is correct
125	Correct	40 ms	22844 KB	Output is correct
126	Correct	67 ms	23040 KB	Output is correct
127	Correct	63 ms	23052 KB	Output is correct
128	Correct	60 ms	22788 KB	Output is correct
129	Correct	60 ms	22784 KB	Output is correct
130	Correct	46 ms	23556 KB	Output is correct
131	Correct	58 ms	24576 KB	Output is correct
132	Correct	73 ms	26632 KB	Output is correct
133	Correct	67 ms	20744 KB	Output is correct
134	Correct	72 ms	22240 KB	Output is correct
135	Correct	41 ms	23108 KB	Output is correct
136	Correct	67 ms	25608 KB	Output is correct
137	Correct	74 ms	26236 KB	Output is correct
138	Correct	52 ms	24384 KB	Output is correct
139	Correct	71 ms	20972 KB	Output is correct
140	Correct	66 ms	21000 KB	Output is correct
141	Correct	70 ms	21168 KB	Output is correct
142	Correct	66 ms	21508 KB	Output is correct
143	Correct	43 ms	23300 KB	Output is correct
144	Correct	54 ms	23048 KB	Output is correct
145	Correct	43 ms	22844 KB	Output is correct
146	Correct	58 ms	19368 KB	Output is correct
147	Correct	92 ms	18136 KB	Output is correct
148	Correct	533 ms	18240 KB	Output is correct
149	Execution timed out	2062 ms	19260 KB	Time limit exceeded
150	Halted	0 ms	0 KB	-

답안 #1003298

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 12.0 / 12.0

Subtask #3 30.0 / 30.0

Subtask #4 0 / 50.0

Subtask #1
8.0 / 8.0

Subtask #2
12.0 / 12.0

Subtask #3
30.0 / 30.0

Subtask #4
0 / 50.0