oj.uz

Submission #927289

# Submission time Handle Problem Language Result Execution time Memory
927289 2024-02-14T15:48:55 Z andrei_boaca Jail (JOI22_jail) C++17
61 / 100
 5000 ms 32852 KB 
#include <bits/stdc++.h>

using namespace std;
int t,n,m,A[120005],B[120005],in[120005],out[120005],timp,par[120005],niv[1200005],dp[21][120005];
vector<int> muchii[120005];
vector<int> edges[120005];
bool isancestor(int a,int b)
{
    return in[a]<=in[b]&&out[a]>=out[b];
}
int LCA(int a,int b)
{
    if(niv[a]>niv[b])
        swap(a,b);
    if(isancestor(a,b))
        return a;
    for(int i=18;i>=0;i--)
        if(dp[i][a]!=0&&!isancestor(dp[i][a],b))
            a=dp[i][a];
    return par[a];
}
int dist(int a,int b)
{
    int lca=LCA(a,b);
    return niv[a]+niv[b]-2*niv[lca];
}
void dfs(int nod)
{
    timp++;
    in[nod]=timp;
    dp[0][nod]=par[nod];
    for(int i=1;i<=18;i++)
        dp[i][nod]=dp[i-1][dp[i-1][nod]];
    for(int i:muchii[nod])
        if(i!=par[nod])
        {
            par[i]=nod;
            niv[i]=niv[nod]+1;
            dfs(i);
        }
    out[nod]=timp;
}
int grad[120005];
void solve()
{
    cin>>n;
    timp=0;
    for(int i=1;i<=n;i++)
        muchii[i].clear();
    for(int i=1;i<n;i++)
    {
        int a,b;
        cin>>a>>b;
        muchii[a].push_back(b);
        muchii[b].push_back(a);
    }
    dfs(1);
    cin>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>A[i]>>B[i];
        edges[i].clear();
        grad[i]=0;
    }
    for(int i=1;i<=m;i++)
        for(int j=1;j<=m;j++)
            if(i!=j)
            {
                if(dist(A[i],A[j])+dist(A[j],B[i])==dist(A[i],B[i]))
                {
                    edges[j].push_back(i);
                    grad[i]++;
                }
                if(dist(A[i],B[j])+dist(B[j],B[i])==dist(A[i],B[i]))
                {
                    edges[i].push_back(j);
                    grad[j]++;
                }
            }
    queue<int> coada;
    int cnt=0;
    for(int i=1;i<=m;i++)
        if(grad[i]==0)
            coada.push(i);
    while(!coada.empty())
    {
        int nod=coada.front();
        coada.pop();
        cnt++;
        for(int i:edges[nod])
        {
            grad[i]--;
            if(grad[i]==0)
                coada.push(i);
        }
    }
    if(cnt==m)
        cout<<"Yes\n";
    else
        cout<<"No\n";
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>t;
    while(t--)
        solve();
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18908 KB Output is correct
4 Correct 9 ms 18780 KB Output is correct
5 Correct 18 ms 18948 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 8 ms 18976 KB Output is correct
9 Correct 130 ms 21436 KB Output is correct
10 Correct 51 ms 31484 KB Output is correct
11 Correct 8 ms 18780 KB Output is correct
12 Correct 79 ms 18932 KB Output is correct
13 Execution timed out 5074 ms 32192 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 4 ms 18780 KB Output is correct
6 Correct 4 ms 18776 KB Output is correct
7 Correct 4 ms 18776 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 3 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 4 ms 18780 KB Output is correct
6 Correct 4 ms 18776 KB Output is correct
7 Correct 4 ms 18776 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 3 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 3 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18776 KB Output is correct
17 Correct 4 ms 18884 KB Output is correct
18 Correct 4 ms 18776 KB Output is correct
19 Correct 3 ms 18780 KB Output is correct
20 Correct 5 ms 18780 KB Output is correct
21 Correct 4 ms 18964 KB Output is correct
22 Correct 4 ms 18780 KB Output is correct
23 Correct 3 ms 18780 KB Output is correct
24 Correct 3 ms 18908 KB Output is correct
25 Correct 4 ms 18976 KB Output is correct
26 Correct 3 ms 18780 KB Output is correct
27 Correct 4 ms 18780 KB Output is correct
28 Correct 3 ms 18780 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 4 ms 18780 KB Output is correct
6 Correct 4 ms 18776 KB Output is correct
7 Correct 4 ms 18776 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 3 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 3 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18776 KB Output is correct
17 Correct 4 ms 18884 KB Output is correct
18 Correct 4 ms 18776 KB Output is correct
19 Correct 3 ms 18780 KB Output is correct
20 Correct 5 ms 18780 KB Output is correct
21 Correct 4 ms 18964 KB Output is correct
22 Correct 4 ms 18780 KB Output is correct
23 Correct 3 ms 18780 KB Output is correct
24 Correct 3 ms 18908 KB Output is correct
25 Correct 4 ms 18976 KB Output is correct
26 Correct 3 ms 18780 KB Output is correct
27 Correct 4 ms 18780 KB Output is correct
28 Correct 3 ms 18780 KB Output is correct
29 Correct 10 ms 19172 KB Output is correct
30 Correct 19 ms 18776 KB Output is correct
31 Correct 15 ms 19036 KB Output is correct
32 Correct 12 ms 18928 KB Output is correct
33 Correct 5 ms 18780 KB Output is correct
34 Correct 31 ms 18780 KB Output is correct
35 Correct 35 ms 19036 KB Output is correct
36 Correct 28 ms 18776 KB Output is correct
37 Correct 20 ms 18992 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18780 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 4 ms 18780 KB Output is correct
6 Correct 4 ms 18776 KB Output is correct
7 Correct 4 ms 18776 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 3 ms 18780 KB Output is correct
11 Correct 4 ms 18780 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 3 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18776 KB Output is correct
17 Correct 4 ms 18884 KB Output is correct
18 Correct 4 ms 18776 KB Output is correct
19 Correct 3 ms 18780 KB Output is correct
20 Correct 5 ms 18780 KB Output is correct
21 Correct 4 ms 18964 KB Output is correct
22 Correct 4 ms 18780 KB Output is correct
23 Correct 3 ms 18780 KB Output is correct
24 Correct 3 ms 18908 KB Output is correct
25 Correct 4 ms 18976 KB Output is correct
26 Correct 3 ms 18780 KB Output is correct
27 Correct 4 ms 18780 KB Output is correct
28 Correct 3 ms 18780 KB Output is correct
29 Correct 10 ms 19172 KB Output is correct
30 Correct 19 ms 18776 KB Output is correct
31 Correct 15 ms 19036 KB Output is correct
32 Correct 12 ms 18928 KB Output is correct
33 Correct 5 ms 18780 KB Output is correct
34 Correct 31 ms 18780 KB Output is correct
35 Correct 35 ms 19036 KB Output is correct
36 Correct 28 ms 18776 KB Output is correct
37 Correct 20 ms 18992 KB Output is correct
38 Correct 126 ms 22608 KB Output is correct
39 Correct 39 ms 32852 KB Output is correct
40 Correct 1000 ms 21508 KB Output is correct
41 Correct 955 ms 20564 KB Output is correct
42 Correct 724 ms 21852 KB Output is correct
43 Correct 27 ms 20316 KB Output is correct
44 Correct 701 ms 19308 KB Output is correct
45 Correct 119 ms 24144 KB Output is correct
46 Correct 133 ms 24144 KB Output is correct
47 Correct 206 ms 27728 KB Output is correct
48 Correct 205 ms 27904 KB Output is correct
49 Correct 168 ms 24148 KB Output is correct
50 Correct 189 ms 24336 KB Output is correct
51 Correct 51 ms 25172 KB Output is correct
52 Correct 57 ms 25436 KB Output is correct
53 Correct 644 ms 19536 KB Output is correct
54 Correct 121 ms 24140 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18912 KB Output is correct
4 Correct 3 ms 18776 KB Output is correct
5 Correct 8 ms 19032 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 3 ms 18776 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18932 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 28 ms 18780 KB Output is correct
13 Correct 336 ms 19708 KB Output is correct
14 Correct 176 ms 19572 KB Output is correct
15 Correct 247 ms 19572 KB Output is correct
16 Execution timed out 5050 ms 24512 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 3 ms 18780 KB Output is correct
3 Correct 3 ms 18908 KB Output is correct
4 Correct 9 ms 18780 KB Output is correct
5 Correct 18 ms 18948 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 8 ms 18976 KB Output is correct
9 Correct 130 ms 21436 KB Output is correct
10 Correct 51 ms 31484 KB Output is correct
11 Correct 8 ms 18780 KB Output is correct
12 Correct 79 ms 18932 KB Output is correct
13 Execution timed out 5074 ms 32192 KB Time limit exceeded
14 Halted 0 ms 0 KB -