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Submission #279275

# Submission time Handle Problem Language Result Execution time Memory
279275 2020-08-22T05:25:38 Z Autoratch Railway (BOI17_railway) C++14
100 / 100
 375 ms 35328 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 1;

int n,m,k;
vector<int> adj[N],rail[N];
int am[N],sz[N],big[N],cnt[N],pa[N];
int now,ans[N];
map<pair<int,int>,int> id;
vector<int> an;

void pre(int u,int p){ sz[u] = 1,pa[u] = p; for(int v : adj[u]) if(v!=p) pre(v,u),sz[u]+=sz[v]; }

void add(int u,int p,int k)
{
    for(int x : rail[u])
    {
        if(!cnt[x] or cnt[x]==am[x]) now++;
        cnt[x]+=k;
        if(!cnt[x] or cnt[x]==am[x]) now--;
    }
    for(int v : adj[u]) if(v!=p and !big[v]) add(v,u,k);
}

void dfs(int u,int p,int k)
{
    int bc = -1,mx = -1;
    for(int v : adj[u]) if(v!=p) if(sz[v]>mx) mx = sz[v],bc = v;
    for(int v : adj[u]) if(v!=p and v!=bc) dfs(v,u,0);
    if(bc!=-1) dfs(bc,u,1),big[bc] = 1;
    add(u,p,1);
    ans[u] = now;
    if(bc!=-1) big[bc] = 0;
    if(!k) add(u,p,-1);
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);

    cin >> n >> m >> k;
    for(int i = 0;i < n-1;i++)
    {
        int a,b;
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
        id[{a,b}] = id[{b,a}] = i+1;
    }
    for(int i = 1;i <= m;i++)
    {
        cin >> am[i];
        for(int j = 0;j < am[i];j++)
        {
            int x;
            cin >> x;
            rail[x].push_back(i);
        }
    }
    pre(1,0);
    dfs(1,0,1);
    for(int i = 2;i <= n;i++)
    {
        if(ans[i]>=k) an.push_back(id[{i,pa[i]}]);
    }
    sort(an.begin(),an.end());
    cout << an.size() << '\n';
    for(int x : an) cout << x << ' ';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 15 ms 6912 KB Output is correct
3 Correct 18 ms 6912 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 5 ms 5120 KB Output is correct
6 Correct 14 ms 7424 KB Output is correct
7 Correct 14 ms 7040 KB Output is correct
8 Correct 12 ms 6912 KB Output is correct
9 Correct 13 ms 6912 KB Output is correct
10 Correct 3 ms 5120 KB Output is correct
11 Correct 3 ms 5120 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 15 ms 6912 KB Output is correct
3 Correct 18 ms 6912 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 5 ms 5120 KB Output is correct
6 Correct 14 ms 7424 KB Output is correct
7 Correct 14 ms 7040 KB Output is correct
8 Correct 12 ms 6912 KB Output is correct
9 Correct 13 ms 6912 KB Output is correct
10 Correct 3 ms 5120 KB Output is correct
11 Correct 3 ms 5120 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 31 ms 7868 KB Output is correct
16 Correct 30 ms 7928 KB Output is correct
17 Correct 31 ms 7936 KB Output is correct
18 Correct 14 ms 7424 KB Output is correct
19 Correct 14 ms 7040 KB Output is correct
20 Correct 27 ms 8320 KB Output is correct
21 Correct 26 ms 8192 KB Output is correct
22 Correct 3 ms 5120 KB Output is correct
23 Correct 15 ms 7040 KB Output is correct
24 Correct 15 ms 6912 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 3 ms 5120 KB Output is correct
27 Correct 14 ms 7424 KB Output is correct
28 Correct 14 ms 7168 KB Output is correct
29 Correct 16 ms 6912 KB Output is correct
30 Correct 13 ms 6912 KB Output is correct
31 Correct 3 ms 5120 KB Output is correct
32 Correct 3 ms 5120 KB Output is correct
33 Correct 3 ms 5120 KB Output is correct
34 Correct 3 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 144 ms 35328 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 141 ms 34864 KB Output is correct
4 Correct 156 ms 34296 KB Output is correct
5 Correct 144 ms 34896 KB Output is correct
6 Correct 145 ms 35064 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 175 ms 29048 KB Output is correct
2 Correct 262 ms 25536 KB Output is correct
3 Correct 282 ms 25336 KB Output is correct
4 Correct 281 ms 25228 KB Output is correct
5 Correct 299 ms 25336 KB Output is correct
6 Correct 219 ms 29304 KB Output is correct
7 Correct 211 ms 29176 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 175 ms 29048 KB Output is correct
2 Correct 262 ms 25536 KB Output is correct
3 Correct 282 ms 25336 KB Output is correct
4 Correct 281 ms 25228 KB Output is correct
5 Correct 299 ms 25336 KB Output is correct
6 Correct 219 ms 29304 KB Output is correct
7 Correct 211 ms 29176 KB Output is correct
8 Correct 201 ms 29944 KB Output is correct
9 Correct 219 ms 29920 KB Output is correct
10 Correct 143 ms 34804 KB Output is correct
11 Correct 156 ms 34788 KB Output is correct
12 Correct 166 ms 25720 KB Output is correct
13 Correct 159 ms 25592 KB Output is correct
14 Correct 252 ms 24824 KB Output is correct
15 Correct 293 ms 24824 KB Output is correct
16 Correct 257 ms 25208 KB Output is correct
17 Correct 264 ms 25208 KB Output is correct
18 Correct 275 ms 25208 KB Output is correct
19 Correct 233 ms 25592 KB Output is correct
20 Correct 177 ms 29432 KB Output is correct
21 Correct 221 ms 29564 KB Output is correct
22 Correct 191 ms 29432 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 15 ms 6912 KB Output is correct
3 Correct 18 ms 6912 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 5 ms 5120 KB Output is correct
6 Correct 14 ms 7424 KB Output is correct
7 Correct 14 ms 7040 KB Output is correct
8 Correct 12 ms 6912 KB Output is correct
9 Correct 13 ms 6912 KB Output is correct
10 Correct 3 ms 5120 KB Output is correct
11 Correct 3 ms 5120 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 31 ms 7868 KB Output is correct
16 Correct 30 ms 7928 KB Output is correct
17 Correct 31 ms 7936 KB Output is correct
18 Correct 14 ms 7424 KB Output is correct
19 Correct 14 ms 7040 KB Output is correct
20 Correct 27 ms 8320 KB Output is correct
21 Correct 26 ms 8192 KB Output is correct
22 Correct 3 ms 5120 KB Output is correct
23 Correct 15 ms 7040 KB Output is correct
24 Correct 15 ms 6912 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 3 ms 5120 KB Output is correct
27 Correct 14 ms 7424 KB Output is correct
28 Correct 14 ms 7168 KB Output is correct
29 Correct 16 ms 6912 KB Output is correct
30 Correct 13 ms 6912 KB Output is correct
31 Correct 3 ms 5120 KB Output is correct
32 Correct 3 ms 5120 KB Output is correct
33 Correct 3 ms 5120 KB Output is correct
34 Correct 3 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 144 ms 35328 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 141 ms 34864 KB Output is correct
39 Correct 156 ms 34296 KB Output is correct
40 Correct 144 ms 34896 KB Output is correct
41 Correct 145 ms 35064 KB Output is correct
42 Correct 175 ms 29048 KB Output is correct
43 Correct 262 ms 25536 KB Output is correct
44 Correct 282 ms 25336 KB Output is correct
45 Correct 281 ms 25228 KB Output is correct
46 Correct 299 ms 25336 KB Output is correct
47 Correct 219 ms 29304 KB Output is correct
48 Correct 211 ms 29176 KB Output is correct
49 Correct 201 ms 29944 KB Output is correct
50 Correct 219 ms 29920 KB Output is correct
51 Correct 143 ms 34804 KB Output is correct
52 Correct 156 ms 34788 KB Output is correct
53 Correct 166 ms 25720 KB Output is correct
54 Correct 159 ms 25592 KB Output is correct
55 Correct 252 ms 24824 KB Output is correct
56 Correct 293 ms 24824 KB Output is correct
57 Correct 257 ms 25208 KB Output is correct
58 Correct 264 ms 25208 KB Output is correct
59 Correct 275 ms 25208 KB Output is correct
60 Correct 233 ms 25592 KB Output is correct
61 Correct 177 ms 29432 KB Output is correct
62 Correct 221 ms 29564 KB Output is correct
63 Correct 191 ms 29432 KB Output is correct
64 Correct 252 ms 29944 KB Output is correct
65 Correct 363 ms 26744 KB Output is correct
66 Correct 324 ms 26152 KB Output is correct
67 Correct 252 ms 25720 KB Output is correct
68 Correct 178 ms 25080 KB Output is correct
69 Correct 174 ms 24952 KB Output is correct
70 Correct 213 ms 30344 KB Output is correct
71 Correct 194 ms 30072 KB Output is correct
72 Correct 4 ms 5120 KB Output is correct
73 Correct 15 ms 6912 KB Output is correct
74 Correct 15 ms 6912 KB Output is correct
75 Correct 4 ms 5120 KB Output is correct
76 Correct 4 ms 5120 KB Output is correct
77 Correct 14 ms 7552 KB Output is correct
78 Correct 16 ms 7016 KB Output is correct
79 Correct 16 ms 6912 KB Output is correct
80 Correct 13 ms 6912 KB Output is correct
81 Correct 4 ms 5120 KB Output is correct
82 Correct 4 ms 5120 KB Output is correct
83 Correct 4 ms 5120 KB Output is correct
84 Correct 3 ms 5120 KB Output is correct
85 Correct 4 ms 5120 KB Output is correct
86 Correct 31 ms 7928 KB Output is correct
87 Correct 37 ms 7936 KB Output is correct
88 Correct 35 ms 7952 KB Output is correct
89 Correct 14 ms 7424 KB Output is correct
90 Correct 14 ms 7040 KB Output is correct
91 Correct 28 ms 8320 KB Output is correct
92 Correct 27 ms 8184 KB Output is correct
93 Correct 4 ms 5120 KB Output is correct
94 Correct 147 ms 35184 KB Output is correct
95 Correct 137 ms 34932 KB Output is correct
96 Correct 139 ms 34296 KB Output is correct
97 Correct 144 ms 34912 KB Output is correct
98 Correct 169 ms 35176 KB Output is correct
99 Correct 296 ms 25464 KB Output is correct
100 Correct 274 ms 25208 KB Output is correct
101 Correct 294 ms 25208 KB Output is correct
102 Correct 259 ms 25720 KB Output is correct
103 Correct 170 ms 29176 KB Output is correct
104 Correct 182 ms 29436 KB Output is correct
105 Correct 172 ms 29176 KB Output is correct
106 Correct 197 ms 30124 KB Output is correct
107 Correct 192 ms 29932 KB Output is correct
108 Correct 149 ms 34800 KB Output is correct
109 Correct 165 ms 34808 KB Output is correct
110 Correct 213 ms 25672 KB Output is correct
111 Correct 219 ms 25720 KB Output is correct
112 Correct 375 ms 24824 KB Output is correct
113 Correct 273 ms 24824 KB Output is correct