oj.uz

Submission #535274

# Submission time Handle Problem Language Result Execution time Memory
535274 2022-03-09T20:58:54 Z groshi Railway (BOI17_railway) C++17
100 / 100
 220 ms 23364 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#include<utility>
using namespace std;
int poziomy[19][100100];
struct wi{
    vector<int> Q;
    int wiel=0;
    int poz=0;
    int wchodze=0;
    int wynik=0;
    int ktora=0;
    int suma=0;
}*w;
int jestem=1;
void ustaw_poziomy(int x)
{
    for(int i=1;i<19;i++)
        poziomy[i][x]=poziomy[i-1][poziomy[i-1][x]];
}
void dfs(int x,int ojciec)
{
    w[x].wchodze=jestem;
    jestem++;
    for(int i=0;i<w[x].Q.size();i+=2)
    {
        int pomoc=w[x].Q[i];
        if(pomoc==ojciec)
        {
            w[x].ktora=i;
            continue;
        }
        w[pomoc].poz=w[x].poz+1;
        poziomy[0][pomoc]=x;
        ustaw_poziomy(pomoc);
        dfs(pomoc,x);
    }
}
int nasze_lca(int x,int y)
{
    if(w[x].poz>w[y].poz)
        swap(x,y);
    for(int k=18;k>=0;k--)
        if(w[y].poz-(1<<k)>=w[x].poz)
            y=poziomy[k][y];
    for(int k=18;k>=0;k--)
        if(poziomy[k][x]!=poziomy[k][y])
        {
            x=poziomy[k][x];
            y=poziomy[k][y];
        }
    if(x==y)
        return x;
    return poziomy[0][x];
}
int dfs2(int x,int ojc)
{
    int suma=0;
    for(int i=0;i<w[x].Q.size();i+=2)
    {
        int pom=w[x].Q[i];
        if(pom==ojc)
            continue;
        suma+=dfs2(pom,x);
    }
    suma+=w[x].suma;
    w[x].wynik=suma;
    return suma;
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int n,m,k,x,y;
    cin>>n>>m>>k;
    w=new wi[n+3];
    for(int i=1;i<n;i++)
    {
        cin>>x>>y;
        w[x].Q.push_back(y);
        w[y].Q.push_back(x);
        w[x].Q.push_back(i);
        w[y].Q.push_back(i);
    }
    dfs(1,0);
    for(int i=1;i<=m;i++)
    {
        int mam;
        cin>>mam;
        vector<pair<int,int> > tak;
        for(int j=0;j<mam;j++)
        {
            cin>>x;
            tak.push_back({w[x].wchodze,x});
        }
        sort(tak.begin(),tak.end());
        for(int j=0;j<tak.size();j++)
        {
            x=tak[j].second;
            y=tak[(j+1)%tak.size()].second;
            int gdzie=nasze_lca(x,y);
            w[x].suma++;
            w[y].suma++;
            w[gdzie].suma-=2;
        }
    }
    int cos=dfs2(1,0);
    vector<int> wypisz;;
    for(int i=2;i<=n;i++)
    {
        if(w[i].wynik>=2*k)
        {
            wypisz.push_back(w[i].Q[w[i].ktora+1]);
        }
    }
    sort(wypisz.begin(),wypisz.end());
    cout<<wypisz.size()<<"\n";
    for(int i=0;i<wypisz.size();i++)
        cout<<wypisz[i]<<" ";
    return 0;
}

Compilation message

railway.cpp: In function 'void dfs(int, int)':
railway.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i=0;i<w[x].Q.size();i+=2)
      |                 ~^~~~~~~~~~~~~~
railway.cpp: In function 'int dfs2(int, int)':
railway.cpp:60:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |     for(int i=0;i<w[x].Q.size();i+=2)
      |                 ~^~~~~~~~~~~~~~
railway.cpp: In function 'int main()':
railway.cpp:99:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |         for(int j=0;j<tak.size();j++)
      |                     ~^~~~~~~~~~~
railway.cpp:120:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |     for(int i=0;i<wypisz.size();i++)
      |                 ~^~~~~~~~~~~~~~
railway.cpp:109:9: warning: unused variable 'cos' [-Wunused-variable]
  109 |     int cos=dfs2(1,0);
      |         ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 7 ms 2012 KB Output is correct
3 Correct 5 ms 2012 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 5 ms 2344 KB Output is correct
7 Correct 5 ms 2132 KB Output is correct
8 Correct 4 ms 2132 KB Output is correct
9 Correct 4 ms 2132 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 7 ms 2012 KB Output is correct
3 Correct 5 ms 2012 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 5 ms 2344 KB Output is correct
7 Correct 5 ms 2132 KB Output is correct
8 Correct 4 ms 2132 KB Output is correct
9 Correct 4 ms 2132 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 32 ms 2388 KB Output is correct
16 Correct 32 ms 2396 KB Output is correct
17 Correct 34 ms 2516 KB Output is correct
18 Correct 6 ms 2388 KB Output is correct
19 Correct 7 ms 2132 KB Output is correct
20 Correct 35 ms 2592 KB Output is correct
21 Correct 36 ms 2524 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 5 ms 2004 KB Output is correct
24 Correct 5 ms 2124 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 5 ms 2392 KB Output is correct
28 Correct 8 ms 2116 KB Output is correct
29 Correct 4 ms 2132 KB Output is correct
30 Correct 4 ms 2132 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 340 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 21152 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 146 ms 20796 KB Output is correct
4 Correct 127 ms 20284 KB Output is correct
5 Correct 220 ms 21188 KB Output is correct
6 Correct 130 ms 21304 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 18368 KB Output is correct
2 Correct 102 ms 16376 KB Output is correct
3 Correct 116 ms 16276 KB Output is correct
4 Correct 98 ms 16116 KB Output is correct
5 Correct 104 ms 16076 KB Output is correct
6 Correct 91 ms 18544 KB Output is correct
7 Correct 90 ms 18412 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 18368 KB Output is correct
2 Correct 102 ms 16376 KB Output is correct
3 Correct 116 ms 16276 KB Output is correct
4 Correct 98 ms 16116 KB Output is correct
5 Correct 104 ms 16076 KB Output is correct
6 Correct 91 ms 18544 KB Output is correct
7 Correct 90 ms 18412 KB Output is correct
8 Correct 128 ms 18668 KB Output is correct
9 Correct 118 ms 18552 KB Output is correct
10 Correct 129 ms 21292 KB Output is correct
11 Correct 145 ms 21288 KB Output is correct
12 Correct 149 ms 16404 KB Output is correct
13 Correct 143 ms 17764 KB Output is correct
14 Correct 121 ms 17876 KB Output is correct
15 Correct 131 ms 17928 KB Output is correct
16 Correct 115 ms 18012 KB Output is correct
17 Correct 105 ms 17988 KB Output is correct
18 Correct 110 ms 17992 KB Output is correct
19 Correct 100 ms 18124 KB Output is correct
20 Correct 79 ms 20556 KB Output is correct
21 Correct 89 ms 20696 KB Output is correct
22 Correct 91 ms 20552 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 7 ms 2012 KB Output is correct
3 Correct 5 ms 2012 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 5 ms 2344 KB Output is correct
7 Correct 5 ms 2132 KB Output is correct
8 Correct 4 ms 2132 KB Output is correct
9 Correct 4 ms 2132 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 32 ms 2388 KB Output is correct
16 Correct 32 ms 2396 KB Output is correct
17 Correct 34 ms 2516 KB Output is correct
18 Correct 6 ms 2388 KB Output is correct
19 Correct 7 ms 2132 KB Output is correct
20 Correct 35 ms 2592 KB Output is correct
21 Correct 36 ms 2524 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 5 ms 2004 KB Output is correct
24 Correct 5 ms 2124 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 5 ms 2392 KB Output is correct
28 Correct 8 ms 2116 KB Output is correct
29 Correct 4 ms 2132 KB Output is correct
30 Correct 4 ms 2132 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 134 ms 21152 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 146 ms 20796 KB Output is correct
39 Correct 127 ms 20284 KB Output is correct
40 Correct 220 ms 21188 KB Output is correct
41 Correct 130 ms 21304 KB Output is correct
42 Correct 86 ms 18368 KB Output is correct
43 Correct 102 ms 16376 KB Output is correct
44 Correct 116 ms 16276 KB Output is correct
45 Correct 98 ms 16116 KB Output is correct
46 Correct 104 ms 16076 KB Output is correct
47 Correct 91 ms 18544 KB Output is correct
48 Correct 90 ms 18412 KB Output is correct
49 Correct 128 ms 18668 KB Output is correct
50 Correct 118 ms 18552 KB Output is correct
51 Correct 129 ms 21292 KB Output is correct
52 Correct 145 ms 21288 KB Output is correct
53 Correct 149 ms 16404 KB Output is correct
54 Correct 143 ms 17764 KB Output is correct
55 Correct 121 ms 17876 KB Output is correct
56 Correct 131 ms 17928 KB Output is correct
57 Correct 115 ms 18012 KB Output is correct
58 Correct 105 ms 17988 KB Output is correct
59 Correct 110 ms 17992 KB Output is correct
60 Correct 100 ms 18124 KB Output is correct
61 Correct 79 ms 20556 KB Output is correct
62 Correct 89 ms 20696 KB Output is correct
63 Correct 91 ms 20552 KB Output is correct
64 Correct 94 ms 20436 KB Output is correct
65 Correct 128 ms 17992 KB Output is correct
66 Correct 191 ms 17928 KB Output is correct
67 Correct 142 ms 17928 KB Output is correct
68 Correct 91 ms 17616 KB Output is correct
69 Correct 101 ms 17616 KB Output is correct
70 Correct 122 ms 20940 KB Output is correct
71 Correct 131 ms 20196 KB Output is correct
72 Correct 0 ms 340 KB Output is correct
73 Correct 5 ms 2004 KB Output is correct
74 Correct 5 ms 2120 KB Output is correct
75 Correct 0 ms 336 KB Output is correct
76 Correct 1 ms 340 KB Output is correct
77 Correct 5 ms 2312 KB Output is correct
78 Correct 5 ms 2132 KB Output is correct
79 Correct 4 ms 2044 KB Output is correct
80 Correct 5 ms 2132 KB Output is correct
81 Correct 1 ms 340 KB Output is correct
82 Correct 0 ms 340 KB Output is correct
83 Correct 0 ms 340 KB Output is correct
84 Correct 0 ms 340 KB Output is correct
85 Correct 0 ms 340 KB Output is correct
86 Correct 29 ms 2388 KB Output is correct
87 Correct 31 ms 2480 KB Output is correct
88 Correct 30 ms 2504 KB Output is correct
89 Correct 6 ms 2396 KB Output is correct
90 Correct 5 ms 2172 KB Output is correct
91 Correct 32 ms 2532 KB Output is correct
92 Correct 39 ms 2540 KB Output is correct
93 Correct 0 ms 340 KB Output is correct
94 Correct 152 ms 22944 KB Output is correct
95 Correct 144 ms 22568 KB Output is correct
96 Correct 145 ms 22092 KB Output is correct
97 Correct 177 ms 22896 KB Output is correct
98 Correct 128 ms 23364 KB Output is correct
99 Correct 121 ms 17944 KB Output is correct
100 Correct 125 ms 17992 KB Output is correct
101 Correct 104 ms 17980 KB Output is correct
102 Correct 91 ms 18124 KB Output is correct
103 Correct 82 ms 20396 KB Output is correct
104 Correct 93 ms 20572 KB Output is correct
105 Correct 77 ms 20180 KB Output is correct
106 Correct 129 ms 20440 KB Output is correct
107 Correct 123 ms 20348 KB Output is correct
108 Correct 156 ms 23008 KB Output is correct
109 Correct 131 ms 22956 KB Output is correct
110 Correct 139 ms 17676 KB Output is correct
111 Correct 145 ms 17768 KB Output is correct
112 Correct 140 ms 17888 KB Output is correct
113 Correct 107 ms 17876 KB Output is correct