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Submission #992009

# Submission time Handle Problem Language Result Execution time Memory
992009 2024-06-03T14:30:24 Z 12345678 September (APIO24_september) C++17
100 / 100
 397 ms 25820 KB 
#include "september.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=1e5+5;

int in[nx], out[nx], t, n, st, rv[nx], cnt;
vector<int> d[nx], k;

struct segtree
{
    int d[4*nx];
    void build(int l, int r, int i)
    {
        d[i]=0;
        if (l==r) return;
        int md=(l+r)/2;
        build(l, md, 2*i);
        build(md+1, r, 2*i+1);
    }
    void update(int l, int r, int i, int idx, int vl)
    {
        if (idx<l||r<idx) return;
        if (l==r) return d[i]=max(d[i], vl), void();
        int md=(l+r)/2;
        update(l ,md, 2*i, idx ,vl);
        update(md+1, r, 2*i+1, idx, vl);
        d[i]=max(d[2*i], d[2*i+1]);
    }
    int query(int l, int r, int i, int ql, int qr)
    {
        if (qr<l||r<ql) return 0;
        if (ql<=l&&r<=qr) return d[i];
        int md=(l+r)/2;
        return max(query(l, md, 2*i, ql, qr), query(md+1, r, 2*i+1, ql, qr));
    }
} s, mxseg;

struct mnsegtree
{
    int d[4*nx];
    void build(int l, int r, int i)
    {
        d[i]=1e9;
        if (l==r) return;
        int md=(l+r)/2;
        build(l, md, 2*i);
        build(md+1, r, 2*i+1);
    }
    void update(int l, int r, int i, int idx, int vl)
    {
        if (idx<l||r<idx) return;
        if (l==r) return d[i]=min(d[i], vl), void();
        int md=(l+r)/2;
        update(l ,md, 2*i, idx ,vl);
        update(md+1, r, 2*i+1, idx, vl);
        d[i]=min(d[2*i], d[2*i+1]);
    }
    int query(int l, int r, int i, int ql, int qr)
    {
        if (qr<l||r<ql) return 0;
        if (ql<=l&&r<=qr) return d[i];
        int md=(l+r)/2;
        return min(query(l, md, 2*i, ql, qr), query(md+1, r, 2*i+1, ql, qr));
    }
} mnseg;

void dfs(int u, int p)
{
    in[u]=++t;
    //cout<<"update "<<u<<' '<<t<<' '<<rv[u]<<'\n';
    if (u!=0) s.update(1, n, 1, t, rv[u]);
    for (auto v:d[u]) dfs(v, u);
    out[u]=t;
}

int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
    for (int i=0; i<N-1; i++) rv[S[0][i]]=i;
    n=N, t=0, st=0, cnt=0;
    int res=0;
    for (int i=0; i<N; i++) in[i]=out[i]=0, d[i].clear();
    for (int i=1; i<N; i++) d[F[i]].push_back(i);
    s.build(1, N, 1);
    mxseg.build(0, N-2, 1);
    mnseg.build(0, N-2, 1);
    for (int i=0; i<N-1; i++) mxseg.update(0, N-2, 1, i, i);
    for (int i=0; i<N-1; i++) mnseg.update(0, N-2, 1, i, i);
    for (int i=1; i<M; i++)
    {
        for (int j=0; j<N-1; j++)
        {
            mxseg.update(0, N-2, 1, rv[S[i][j]], j);
            mnseg.update(0, N-2, 1, rv[S[i][j]], j);
        }
    }
    dfs(0, 0);
    while (st<N-1)
    {
        int mx=0;
        for (int lst=st; lst<N-1; lst++)
        {
            mx=max(mx, s.query(1, n, 1, in[S[0][lst]], out[S[0][lst]]));
            //cout<<"debug "<<st<<' '<<lst<<' '<<mx<<' '<<S[0][lst]<<'\n';
            if (mxseg.query(0, N-2, 1, st, lst)>lst) continue;
            if (mx==lst) 
            {
                res++;
                st=lst+1;
                break;
            }
        }
    }
    return res;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct
8 Correct 2 ms 7256 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 1 ms 7512 KB Output is correct
11 Correct 1 ms 7260 KB Output is correct
12 Correct 1 ms 7260 KB Output is correct
13 Correct 1 ms 7260 KB Output is correct
14 Correct 1 ms 7260 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct
8 Correct 2 ms 7516 KB Output is correct
9 Correct 3 ms 7516 KB Output is correct
10 Correct 2 ms 7516 KB Output is correct
11 Correct 2 ms 7260 KB Output is correct
12 Correct 2 ms 7260 KB Output is correct
13 Correct 2 ms 7260 KB Output is correct
14 Correct 2 ms 7260 KB Output is correct
15 Correct 2 ms 7256 KB Output is correct
16 Correct 2 ms 7260 KB Output is correct
17 Correct 2 ms 7260 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 3 ms 7516 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct
8 Correct 2 ms 7256 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 1 ms 7512 KB Output is correct
11 Correct 1 ms 7260 KB Output is correct
12 Correct 1 ms 7260 KB Output is correct
13 Correct 1 ms 7260 KB Output is correct
14 Correct 1 ms 7260 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 3 ms 7516 KB Output is correct
17 Correct 2 ms 7516 KB Output is correct
18 Correct 2 ms 7260 KB Output is correct
19 Correct 2 ms 7260 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 2 ms 7256 KB Output is correct
23 Correct 2 ms 7260 KB Output is correct
24 Correct 2 ms 7260 KB Output is correct
25 Correct 3 ms 7516 KB Output is correct
26 Correct 3 ms 7516 KB Output is correct
27 Correct 2 ms 7516 KB Output is correct
28 Correct 3 ms 7260 KB Output is correct
29 Correct 3 ms 7260 KB Output is correct
30 Correct 3 ms 7260 KB Output is correct
31 Correct 3 ms 7260 KB Output is correct
32 Correct 3 ms 7348 KB Output is correct
33 Correct 3 ms 7256 KB Output is correct
34 Correct 3 ms 7260 KB Output is correct

Subtask #7
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 311 ms 22736 KB Output is correct
5 Correct 315 ms 22728 KB Output is correct
6 Correct 313 ms 22732 KB Output is correct

Subtask #8
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct
8 Correct 2 ms 7516 KB Output is correct
9 Correct 3 ms 7516 KB Output is correct
10 Correct 2 ms 7516 KB Output is correct
11 Correct 2 ms 7260 KB Output is correct
12 Correct 2 ms 7260 KB Output is correct
13 Correct 2 ms 7260 KB Output is correct
14 Correct 2 ms 7260 KB Output is correct
15 Correct 2 ms 7256 KB Output is correct
16 Correct 2 ms 7260 KB Output is correct
17 Correct 2 ms 7260 KB Output is correct
18 Correct 311 ms 22736 KB Output is correct
19 Correct 315 ms 22728 KB Output is correct
20 Correct 313 ms 22732 KB Output is correct
21 Correct 388 ms 12976 KB Output is correct
22 Correct 396 ms 12972 KB Output is correct
23 Correct 397 ms 14292 KB Output is correct
24 Correct 371 ms 14224 KB Output is correct
25 Correct 372 ms 12968 KB Output is correct
26 Correct 377 ms 12972 KB Output is correct
27 Correct 364 ms 14252 KB Output is correct

Subtask #9
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 3 ms 7516 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 2 ms 7516 KB Output is correct
7 Correct 311 ms 22736 KB Output is correct
8 Correct 315 ms 22728 KB Output is correct
9 Correct 313 ms 22732 KB Output is correct
10 Correct 180 ms 25752 KB Output is correct
11 Correct 180 ms 25800 KB Output is correct
12 Correct 181 ms 25820 KB Output is correct

Subtask #10
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7256 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7260 KB Output is correct
5 Correct 1 ms 7260 KB Output is correct
6 Correct 1 ms 7260 KB Output is correct
7 Correct 1 ms 7260 KB Output is correct
8 Correct 2 ms 7256 KB Output is correct
9 Correct 1 ms 7260 KB Output is correct
10 Correct 1 ms 7512 KB Output is correct
11 Correct 1 ms 7260 KB Output is correct
12 Correct 1 ms 7260 KB Output is correct
13 Correct 1 ms 7260 KB Output is correct
14 Correct 1 ms 7260 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 3 ms 7516 KB Output is correct
17 Correct 2 ms 7516 KB Output is correct
18 Correct 2 ms 7260 KB Output is correct
19 Correct 2 ms 7260 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 2 ms 7256 KB Output is correct
23 Correct 2 ms 7260 KB Output is correct
24 Correct 2 ms 7260 KB Output is correct
25 Correct 3 ms 7516 KB Output is correct
26 Correct 3 ms 7516 KB Output is correct
27 Correct 2 ms 7516 KB Output is correct
28 Correct 3 ms 7260 KB Output is correct
29 Correct 3 ms 7260 KB Output is correct
30 Correct 3 ms 7260 KB Output is correct
31 Correct 3 ms 7260 KB Output is correct
32 Correct 3 ms 7348 KB Output is correct
33 Correct 3 ms 7256 KB Output is correct
34 Correct 3 ms 7260 KB Output is correct
35 Correct 311 ms 22736 KB Output is correct
36 Correct 315 ms 22728 KB Output is correct
37 Correct 313 ms 22732 KB Output is correct
38 Correct 388 ms 12976 KB Output is correct
39 Correct 396 ms 12972 KB Output is correct
40 Correct 397 ms 14292 KB Output is correct
41 Correct 371 ms 14224 KB Output is correct
42 Correct 372 ms 12968 KB Output is correct
43 Correct 377 ms 12972 KB Output is correct
44 Correct 364 ms 14252 KB Output is correct
45 Correct 180 ms 25752 KB Output is correct
46 Correct 180 ms 25800 KB Output is correct
47 Correct 181 ms 25820 KB Output is correct
48 Correct 194 ms 15000 KB Output is correct
49 Correct 187 ms 14796 KB Output is correct
50 Correct 188 ms 16328 KB Output is correct
51 Correct 185 ms 16328 KB Output is correct
52 Correct 194 ms 14792 KB Output is correct
53 Correct 186 ms 14792 KB Output is correct
54 Correct 185 ms 16296 KB Output is correct