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Submission #842193

# Submission time Handle Problem Language Result Execution time Memory
842193 2023-09-02T13:56:59 Z gs18115 Beech Tree (IOI23_beechtree) C++17
22 / 100
 228 ms 89028 KB 
#include"beechtree.h"
#include<iostream>
#include<vector>
#include<map>
#include<set>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;
const int mxn=200010;
vector<pi>adj[mxn];
int sz[mxn];
void dfs(int x)
{
    sz[x]=1;
    for(pi&t:adj[x])
        dfs(t.fi),sz[x]+=sz[t.fi];
    return;
}
bool isinc(const vector<int>&x,const vector<int>&y)
{
    if(x.size()>y.size())
        return 0;
    for(const int&t:x)
        if(!binary_search(all(y),t))
            return 0;
    return 1;
}
vector<int>subtr[mxn];
multimap<int,int>ss[mxn];
map<int,set<pi> >mm[mxn];
int n,m;
int p[mxn],c[mxn];
vector<vector<int> >st;
bool push(int i,int j)
{
    subtr[i].eb(j);
    int x=sz[j];
    auto&s=ss[i];
    {
        auto it=s.ep(x,j);
        if(it!=s.begin())
        {
            auto it2=prev(it);
            if(!isinc(st[it2->se],st[j]))
                return 0;
        }
        auto it2=next(it);
        if(it2!=s.end())
        {
            if(!isinc(st[j],st[it2->se]))
                return 0;
        }
    }
    if(i==0)
        return 1;
    set<pi>&m=mm[i][c[j]];
    int y=sz[p[j]];
    {
        auto it=m.ep(x,y).fi;
        if(it!=m.begin())
        {
            auto it2=prev(it);
            if(it2->se>y)
                return 0;
        }
        auto it2=next(it);
        if(it2!=m.end())
        {
            if(y>it2->se)
                return 0;
        }
    }
    return 1;
}
vector<int>beechtree(int N,int M,vector<int>P,vector<int>C)
{
    n=N,m=M;
    for(int i=0;i<n;i++)
        p[i]=P[i],c[i]=C[i];
    vector<int>isok(n,1);
    for(int i=1;i<n;i++)
        adj[p[i]].eb(i,c[i]);
    st.resize(n);
    for(int i=n;i-->0;)
    {
        for(pi&t:adj[i])
            st[i].eb(t.se);
        sort(all(st[i]));
        auto it=unique(all(st[i]));
        if(it!=st[i].end())
            isok[i]=0;
        if(isok[i]==0&&i>0)
            isok[p[i]]=0;
        st[i].eb(inf);
    }
    dfs(0);
    vector<int>vv;
    for(int i=0;i<n;i++)
        if(isok[i]==1)
            vv.eb(i);
    sort(all(vv),[&](int x,int y){return sz[x]<sz[y];});
    for(int&i:vv)
    {
        if(isok[i]==0)
        {
            if(i>0)
                isok[p[i]]=0;
            continue;
        }
        for(pi&tt:adj[i])
        {
            int t=tt.fi;
        }
        push(i,i);
        for(pi&tt:adj[i])
        {
            int t=tt.fi;
            if(subtr[t].size()>subtr[i].size())
                swap(subtr[t],subtr[i]),
                swap(ss[t],ss[i]),
                swap(mm[t],mm[i]);
            ss[t].clear();
            mm[t].clear();
            for(int&x:subtr[t])
            {
                if(!push(i,x))
                {
                    isok[i]=0;
                    break;
                }
            }
            subtr[t].clear();
            if(isok[i]==0)
                break;
        }
        if(isok[i]==0)
        {
            if(i>0)
                isok[p[i]]=0;
            continue;
        }
    }
    return isok;
}

Compilation message

beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:121:17: warning: unused variable 't' [-Wunused-variable]
  121 |             int t=tt.fi;
      |                 ^

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct

Subtask #1
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30552 KB Output is correct
5 Correct 7 ms 30556 KB Output is correct
6 Correct 6 ms 30556 KB Output is correct
7 Correct 6 ms 30552 KB Output is correct
8 Correct 6 ms 30556 KB Output is correct
9 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
10 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30552 KB Output is correct
5 Correct 7 ms 30556 KB Output is correct
6 Correct 6 ms 30556 KB Output is correct
7 Correct 94 ms 62720 KB Output is correct
8 Correct 93 ms 62416 KB Output is correct
9 Correct 7 ms 30808 KB Output is correct
10 Correct 6 ms 30808 KB Output is correct
11 Correct 6 ms 30808 KB Output is correct
12 Correct 6 ms 30812 KB Output is correct
13 Correct 8 ms 31324 KB Output is correct
14 Correct 8 ms 31064 KB Output is correct
15 Correct 8 ms 31064 KB Output is correct
16 Correct 7 ms 31064 KB Output is correct
17 Correct 225 ms 87988 KB Output is correct
18 Correct 175 ms 79604 KB Output is correct
19 Correct 109 ms 66528 KB Output is correct
20 Correct 88 ms 62416 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30808 KB Output is correct
2 Correct 7 ms 30808 KB Output is correct
3 Correct 6 ms 30808 KB Output is correct
4 Correct 6 ms 30812 KB Output is correct
5 Correct 8 ms 30808 KB Output is correct
6 Correct 6 ms 30808 KB Output is correct
7 Correct 7 ms 30808 KB Output is correct
8 Correct 6 ms 30808 KB Output is correct
9 Correct 6 ms 30808 KB Output is correct
10 Correct 6 ms 30808 KB Output is correct
11 Correct 8 ms 31064 KB Output is correct
12 Correct 7 ms 31068 KB Output is correct
13 Correct 7 ms 31320 KB Output is correct
14 Correct 7 ms 31064 KB Output is correct
15 Correct 145 ms 64712 KB Output is correct
16 Correct 121 ms 62328 KB Output is correct
17 Correct 129 ms 62480 KB Output is correct
18 Correct 137 ms 64204 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30556 KB Output is correct
5 Correct 94 ms 62720 KB Output is correct
6 Correct 93 ms 62416 KB Output is correct
7 Correct 8 ms 30808 KB Output is correct
8 Correct 6 ms 30808 KB Output is correct
9 Correct 8 ms 31320 KB Output is correct
10 Correct 7 ms 31324 KB Output is correct
11 Correct 224 ms 87492 KB Output is correct
12 Correct 228 ms 89028 KB Output is correct

Subtask #5
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30552 KB Output is correct
5 Correct 6 ms 30552 KB Output is correct
6 Correct 6 ms 30552 KB Output is correct
7 Correct 6 ms 30552 KB Output is correct
8 Correct 7 ms 30556 KB Output is correct
9 Correct 6 ms 30556 KB Output is correct
10 Correct 6 ms 30552 KB Output is correct
11 Correct 6 ms 30556 KB Output is correct
12 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -

Subtask #6
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30556 KB Output is correct
5 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
6 Halted 0 ms 0 KB -

Subtask #7
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30552 KB Output is correct
5 Correct 6 ms 30552 KB Output is correct
6 Correct 6 ms 30552 KB Output is correct
7 Correct 6 ms 30552 KB Output is correct
8 Correct 7 ms 30556 KB Output is correct
9 Correct 6 ms 30556 KB Output is correct
10 Correct 6 ms 30552 KB Output is correct
11 Correct 6 ms 30556 KB Output is correct
12 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -

Subtask #8
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30556 KB Output is correct
5 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
6 Halted 0 ms 0 KB -

Subtask #9
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 30552 KB Output is correct
2 Correct 6 ms 30552 KB Output is correct
3 Correct 6 ms 30552 KB Output is correct
4 Correct 6 ms 30552 KB Output is correct
5 Correct 6 ms 30552 KB Output is correct
6 Correct 6 ms 30552 KB Output is correct
7 Correct 6 ms 30552 KB Output is correct
8 Correct 7 ms 30556 KB Output is correct
9 Correct 6 ms 30556 KB Output is correct
10 Correct 6 ms 30552 KB Output is correct
11 Correct 6 ms 30556 KB Output is correct
12 Incorrect 7 ms 30552 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -