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Submission #1024962

# Submission time Handle Problem Language Result Execution time Memory
1024962 2024-07-16T13:21:46 Z Mardonbekhazratov Beech Tree (IOI23_beechtree) C++17
14 / 100
 53 ms 24232 KB 
#include "beechtree.h"
#include <algorithm>
#include <map>

using namespace std;

int n,m;
vector<int>p,c,ans,depth;
vector<vector<int>>v;

vector<int>subtree;

void dfs(int x){
    subtree.push_back(x);
    for(int z:v[x]){
        dfs(z);
    }
}

bool check(vector<int>s){
    map<int,int>m;
    for(int i=1;i<s.size();i++){
        if(s[m[c[s[i]]]]!=p[s[i]]) return false;
        m[c[s[i]]]++;
    }
    return true;
}

void sub1(){
    for(int i=0;i<n;i++){
        dfs(i);
        sort(subtree.begin(),subtree.end());
        do{
            if(check(subtree)){
                ans[i]=1;
                break;
            }
        }while(next_permutation(subtree.begin(),subtree.end()));
        subtree.clear();
    }
}

void sub2(){
    ans[n-1]=ans[n-2]=1;
    int j=n-2;
    while(j>0 && c[j]==c[j+1]){
        ans[--j]=1;
    }
}

void sub3(){
    vector<vector<int>>cnt(m+1);
    int k=0,g=0;
    for(int i=1;i<n;i++){
        if(depth[i]==2) g=i,k++;
        cnt[c[i]].push_back(i);
        dfs(i);
        ans[i]=check(subtree);
        vector<int>ev;
        swap(ev,subtree);
    }
    for(int i=1;i<=m;i++){
        if(i!=c[g] && cnt[c[i]].size()>1) return;
    }
    if(k>1 || cnt[c[g]].size()!=2) return;
    ans[0]=1;
    // vector<bool>vis(n,false);
    // subtree.push_back(0);
    // if(g>0){
    //     subtree.push_back(p[g]);
    //     if(cnt[c[g]][0]!=p[g]) subtree.push_back(cnt[c[g]][0]);
    // }
    // for(int x:subtree) vis[x]=true;
}

void dfs(int x,int c){
    depth[x]=c;
    for(int z:v[x]){
        dfs(z,c+1);
    }
}

vector<int> beechtree(int N, int M, std::vector<int> P, std::vector<int> C){
    n=N,m=M;
    swap(p,P);
    swap(c,C);
    v.resize(n);
    bool sui2=true;
    for(int i=1;i<n;i++){
        if(p[i]!=i-1) sui2=false;
        v[p[i]].push_back(i);
    }
    ans.assign(n,0);
    depth.resize(n);
    dfs(0,0);
    if(n<=8) sub1();
    else if(sui2) sub2();
    else sub3();
    return ans;
}

Compilation message

beechtree.cpp: In function 'bool check(std::vector<int>)':
beechtree.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i=1;i<s.size();i++){
      |                 ~^~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 2nd lines differ - on the 2nd token, expected: '1', found: '0'
3 Halted 0 ms 0 KB -

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 424 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 428 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 2 ms 424 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 344 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 53 ms 24148 KB Output is correct
8 Correct 50 ms 24232 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 440 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 48 ms 23940 KB Output is correct
18 Correct 48 ms 23980 KB Output is correct
19 Correct 49 ms 24148 KB Output is correct
20 Correct 51 ms 24152 KB Output is correct

Subtask #3
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 424 KB Output is correct
2 Correct 0 ms 428 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 428 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 424 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
10 Halted 0 ms 0 KB -

Subtask #4
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 53 ms 24148 KB Output is correct
6 Correct 50 ms 24232 KB Output is correct
7 Incorrect 1 ms 348 KB 2nd lines differ - on the 52nd token, expected: '1', found: '0'
8 Halted 0 ms 0 KB -

Subtask #5
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 2nd lines differ - on the 2nd token, expected: '1', found: '0'
3 Halted 0 ms 0 KB -

Subtask #6
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 420 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 424 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 428 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Incorrect 3 ms 628 KB 2nd lines differ - on the 6th token, expected: '1', found: '0'
31 Halted 0 ms 0 KB -

Subtask #7
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 2nd lines differ - on the 2nd token, expected: '1', found: '0'
3 Halted 0 ms 0 KB -

Subtask #8
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 420 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 424 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 428 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Incorrect 3 ms 628 KB 2nd lines differ - on the 6th token, expected: '1', found: '0'
31 Halted 0 ms 0 KB -

Subtask #9
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB 2nd lines differ - on the 2nd token, expected: '1', found: '0'
3 Halted 0 ms 0 KB -