답안 #1003249

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1003249	2024-06-20T08:11:35 Z	vjudge1	Subtree (INOI20_subtree)	C++17	20 / 100	2000 ms	29952 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) {
  vis[c]=1;
  for(int at:cycles[c]) {
    dp[at]=1;
    for(int to:g[at]) {
      if(!vis[getCycle[to]]) {
        dfsCalc(getCycle[to]);
        dp[at] = (dp[at]*(dp[to]+1))%mod;
      }
    }
  }
  if(cycles[c].size()==1){
    ans+=dp[cycles[c][0]];
    ans%=mod;
    return;
  }
  for(int i = 0;i<cycles[c].size();i++) {
    for(int j = 0;j<cycles[c].size();j++) {
      long long prod = dp[cycles[c][j]];
      int sz=1;
      for(int k = i;k!=j;k=(k+1)%cycles[c].size()){
        prod=(prod*dp[cycles[c][k]])%mod;
        sz++;
      }
      if(sz==cycles[c].size())continue;
      ans+=prod;
      ans%=mod;
      for(int k = i;k!=j;k=(k+1)%cycles[c].size()) {
        tmpdp[cycles[c][k]]+=prod;
        tmpdp[cycles[c][k]]%=mod;
      }
      tmpdp[cycles[c][j]]+=prod;
      tmpdp[cycles[c][j]]%=mod;
    }
  }
  for(int i:cycles[c]) {
    dp[i]=tmpdp[i];
    ans%=mod;
  }
}
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);
  cout << ans%mod << "\n";
}

Compilation message

Main.cpp: In function 'void dfsCalc(int)':
Main.cpp:74:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |   for(int i = 0;i<cycles[c].size();i++) {
      |                 ~^~~~~~~~~~~~~~~~~
Main.cpp:75:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |     for(int j = 0;j<cycles[c].size();j++) {
      |                   ~^~~~~~~~~~~~~~~~~
Main.cpp:82:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |       if(sz==cycles[c].size())continue;
      |          ~~^~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	4 ms	7428 KB	Output is correct
4	Correct	3 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7584 KB	Output is correct
7	Correct	4 ms	7516 KB	Output is correct
8	Correct	3 ms	7516 KB	Output is correct
9	Correct	3 ms	7588 KB	Output is correct
10	Correct	3 ms	7516 KB	Output is correct
11	Correct	3 ms	7516 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	7512 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	3 ms	7516 KB	Output is correct
18	Correct	4 ms	7516 KB	Output is correct
19	Correct	3 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	4 ms	7516 KB	Output is correct
22	Correct	3 ms	7516 KB	Output is correct
23	Correct	3 ms	7628 KB	Output is correct
24	Correct	3 ms	7516 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	7472 KB	Output is correct
29	Correct	3 ms	7516 KB	Output is correct
30	Correct	3 ms	7628 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	7416 KB	Output is correct
35	Correct	4 ms	7516 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	4 ms	7628 KB	Output is correct
38	Correct	4 ms	7468 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	3 ms	7512 KB	Output is correct
41	Correct	3 ms	7588 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	7768 KB	Output is correct
45	Correct	3 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	4 ms	7516 KB	Output is correct
50	Correct	3 ms	7516 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	4 ms	7512 KB	Output is correct
2	Correct	8 ms	8852 KB	Output is correct
3	Correct	53 ms	21504 KB	Output is correct
4	Correct	55 ms	21372 KB	Output is correct
5	Correct	58 ms	21280 KB	Output is correct
6	Correct	54 ms	21508 KB	Output is correct
7	Correct	90 ms	27904 KB	Output is correct
8	Correct	66 ms	25584 KB	Output is correct
9	Correct	62 ms	25604 KB	Output is correct
10	Correct	53 ms	22272 KB	Output is correct
11	Correct	45 ms	21820 KB	Output is correct
12	Correct	64 ms	21248 KB	Output is correct
13	Correct	64 ms	21248 KB	Output is correct
14	Correct	52 ms	24628 KB	Output is correct
15	Correct	74 ms	29184 KB	Output is correct
16	Correct	69 ms	29952 KB	Output is correct
17	Correct	64 ms	21168 KB	Output is correct
18	Correct	76 ms	21252 KB	Output is correct
19	Correct	67 ms	21248 KB	Output is correct
20	Correct	43 ms	21568 KB	Output is correct
21	Correct	45 ms	21712 KB	Output is correct
22	Correct	55 ms	21540 KB	Output is correct

Subtask #3
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	4 ms	7428 KB	Output is correct
4	Correct	3 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7584 KB	Output is correct
7	Correct	4 ms	7516 KB	Output is correct
8	Correct	3 ms	7516 KB	Output is correct
9	Correct	3 ms	7588 KB	Output is correct
10	Correct	3 ms	7516 KB	Output is correct
11	Correct	3 ms	7516 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	7512 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	3 ms	7516 KB	Output is correct
18	Correct	4 ms	7516 KB	Output is correct
19	Correct	3 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	4 ms	7516 KB	Output is correct
22	Correct	3 ms	7516 KB	Output is correct
23	Correct	3 ms	7628 KB	Output is correct
24	Correct	3 ms	7516 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	7472 KB	Output is correct
29	Correct	3 ms	7516 KB	Output is correct
30	Correct	3 ms	7628 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	7416 KB	Output is correct
35	Correct	4 ms	7516 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	4 ms	7628 KB	Output is correct
38	Correct	4 ms	7468 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	3 ms	7512 KB	Output is correct
41	Correct	3 ms	7588 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	7768 KB	Output is correct
45	Correct	3 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	4 ms	7516 KB	Output is correct
50	Correct	3 ms	7516 KB	Output is correct
51	Correct	3 ms	7516 KB	Output is correct
52	Correct	6 ms	8284 KB	Output is correct
53	Correct	7 ms	8284 KB	Output is correct
54	Correct	6 ms	8388 KB	Output is correct
55	Correct	6 ms	8540 KB	Output is correct
56	Correct	6 ms	8540 KB	Output is correct
57	Correct	5 ms	8452 KB	Output is correct
58	Correct	5 ms	8424 KB	Output is correct
59	Correct	8 ms	8284 KB	Output is correct
60	Correct	4 ms	8284 KB	Output is correct
61	Correct	9 ms	8176 KB	Output is correct
62	Correct	6 ms	8284 KB	Output is correct
63	Correct	5 ms	8284 KB	Output is correct
64	Correct	5 ms	8284 KB	Output is correct
65	Correct	5 ms	8436 KB	Output is correct
66	Correct	7 ms	8392 KB	Output is correct
67	Correct	5 ms	8540 KB	Output is correct
68	Correct	6 ms	8540 KB	Output is correct
69	Correct	5 ms	8160 KB	Output is correct
70	Correct	5 ms	8280 KB	Output is correct
71	Correct	7 ms	8284 KB	Output is correct
72	Correct	6 ms	8284 KB	Output is correct
73	Correct	5 ms	8364 KB	Output is correct
74	Correct	9 ms	8044 KB	Output is correct
75	Correct	6 ms	8284 KB	Output is correct
76	Correct	13 ms	8368 KB	Output is correct
77	Correct	17 ms	8540 KB	Output is correct
78	Execution timed out	2098 ms	8236 KB	Time limit exceeded
79	Halted	0 ms	0 KB	-

Subtask #4
0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7516 KB	Output is correct
2	Correct	3 ms	7516 KB	Output is correct
3	Correct	4 ms	7428 KB	Output is correct
4	Correct	3 ms	7516 KB	Output is correct
5	Correct	3 ms	7516 KB	Output is correct
6	Correct	3 ms	7584 KB	Output is correct
7	Correct	4 ms	7516 KB	Output is correct
8	Correct	3 ms	7516 KB	Output is correct
9	Correct	3 ms	7588 KB	Output is correct
10	Correct	3 ms	7516 KB	Output is correct
11	Correct	3 ms	7516 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	7512 KB	Output is correct
15	Correct	3 ms	7516 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	3 ms	7516 KB	Output is correct
18	Correct	4 ms	7516 KB	Output is correct
19	Correct	3 ms	7516 KB	Output is correct
20	Correct	3 ms	7516 KB	Output is correct
21	Correct	4 ms	7516 KB	Output is correct
22	Correct	3 ms	7516 KB	Output is correct
23	Correct	3 ms	7628 KB	Output is correct
24	Correct	3 ms	7516 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	7472 KB	Output is correct
29	Correct	3 ms	7516 KB	Output is correct
30	Correct	3 ms	7628 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	7416 KB	Output is correct
35	Correct	4 ms	7516 KB	Output is correct
36	Correct	3 ms	7516 KB	Output is correct
37	Correct	4 ms	7628 KB	Output is correct
38	Correct	4 ms	7468 KB	Output is correct
39	Correct	3 ms	7512 KB	Output is correct
40	Correct	3 ms	7512 KB	Output is correct
41	Correct	3 ms	7588 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	7768 KB	Output is correct
45	Correct	3 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	4 ms	7516 KB	Output is correct
50	Correct	3 ms	7516 KB	Output is correct
51	Correct	3 ms	7516 KB	Output is correct
52	Correct	4 ms	7512 KB	Output is correct
53	Correct	8 ms	8852 KB	Output is correct
54	Correct	53 ms	21504 KB	Output is correct
55	Correct	55 ms	21372 KB	Output is correct
56	Correct	58 ms	21280 KB	Output is correct
57	Correct	54 ms	21508 KB	Output is correct
58	Correct	90 ms	27904 KB	Output is correct
59	Correct	66 ms	25584 KB	Output is correct
60	Correct	62 ms	25604 KB	Output is correct
61	Correct	53 ms	22272 KB	Output is correct
62	Correct	45 ms	21820 KB	Output is correct
63	Correct	64 ms	21248 KB	Output is correct
64	Correct	64 ms	21248 KB	Output is correct
65	Correct	52 ms	24628 KB	Output is correct
66	Correct	74 ms	29184 KB	Output is correct
67	Correct	69 ms	29952 KB	Output is correct
68	Correct	64 ms	21168 KB	Output is correct
69	Correct	76 ms	21252 KB	Output is correct
70	Correct	67 ms	21248 KB	Output is correct
71	Correct	43 ms	21568 KB	Output is correct
72	Correct	45 ms	21712 KB	Output is correct
73	Correct	55 ms	21540 KB	Output is correct
74	Correct	6 ms	8284 KB	Output is correct
75	Correct	7 ms	8284 KB	Output is correct
76	Correct	6 ms	8388 KB	Output is correct
77	Correct	6 ms	8540 KB	Output is correct
78	Correct	6 ms	8540 KB	Output is correct
79	Correct	5 ms	8452 KB	Output is correct
80	Correct	5 ms	8424 KB	Output is correct
81	Correct	8 ms	8284 KB	Output is correct
82	Correct	4 ms	8284 KB	Output is correct
83	Correct	9 ms	8176 KB	Output is correct
84	Correct	6 ms	8284 KB	Output is correct
85	Correct	5 ms	8284 KB	Output is correct
86	Correct	5 ms	8284 KB	Output is correct
87	Correct	5 ms	8436 KB	Output is correct
88	Correct	7 ms	8392 KB	Output is correct
89	Correct	5 ms	8540 KB	Output is correct
90	Correct	6 ms	8540 KB	Output is correct
91	Correct	5 ms	8160 KB	Output is correct
92	Correct	5 ms	8280 KB	Output is correct
93	Correct	7 ms	8284 KB	Output is correct
94	Correct	6 ms	8284 KB	Output is correct
95	Correct	5 ms	8364 KB	Output is correct
96	Correct	9 ms	8044 KB	Output is correct
97	Correct	6 ms	8284 KB	Output is correct
98	Correct	13 ms	8368 KB	Output is correct
99	Correct	17 ms	8540 KB	Output is correct
100	Execution timed out	2098 ms	8236 KB	Time limit exceeded
101	Halted	0 ms	0 KB	-

답안 #1003249

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 12.0 / 12.0

Subtask #3 0 / 30.0

Subtask #4 0 / 50.0

Subtask #1
8.0 / 8.0

Subtask #2
12.0 / 12.0

Subtask #3
0 / 30.0

Subtask #4
0 / 50.0