oj.uz

Submission #1093043

# Submission time Handle Problem Language Result Execution time Memory
1093043 2024-09-25T18:21:42 Z Jakub_Wozniak Village (BOI20_village) C++17
50 / 100
 61 ms 25936 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define nd second
#define st first
typedef pair<ll, ll> pii;
const int maxn = (1e+5)+9;
vector <ll> t[maxn];
ll siz[maxn];
ll dep[maxn];
ll sumdep[maxn];
ll cen = -1;
ll dp[maxn][2];
vector<pii> resmin[maxn][2];
ll tabmin[maxn];
ll tabmax[maxn];

vector <int> podd[maxn];
ll N;


void DFS(int v , int o)
{
    vector <int> V[2];
    ll ind = -1;
    ll p , res = 0; bool B = 0; ll mini = (1e+18);
    for(int i = 0 ;i < t[v].size();i++) 
    {
        p = t[v][i];
        if(p == o)continue;
        DFS(p,v);
        if(dp[p][1]+2 <= dp[p][0])
        {
            V[1].push_back(p);
            res += dp[p][1]+2;
            B = 1;
        }
        else
        {
            V[0].push_back(p);
            res += dp[p][0];
            if(dp[p][1]+2-dp[p][0] < mini)ind = p;
            mini = min(dp[p][1]+2-dp[p][0] , mini);
        }
    }


    dp[v][1] = res;

    if(B == 0)
    {
        res += mini;
    }          
    dp[v][0] = res;
    
     
}

void DFS2(int v, int o)
{
    siz[v] = 1;
    int p , pmax = 0;
    for(int i = 0; i < t[v].size() ;i++)
    {
        p = t[v][i];
        if(p == o)continue;
        DFS2(p,v);
        pmax = max((ll)pmax,siz[p]);
        siz[v] += siz[p];
    }

    pmax = max((ll)pmax,N-siz[v]);

    if(pmax <= N/2)cen = v;     
}

void DFS3(int v ,int o , int c)
{
    podd[c].push_back(v);
    sumdep[v] = dep[v];
    int p;
    for(int i = 0 ;i < t[v].size() ;i++)
    {
        p = t[v][i];
        if(p == o)continue;
        dep[p] = dep[v]+1;
        DFS3(p,v,c);
        sumdep[v] += sumdep[p];
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll A , B;
    cin >> N;
    for(int i = 0 ;i < N-1 ; i++)
    {
        cin >> A >> B;
        t[A].push_back(B);
        t[B].push_back(A);
    }

    if(N == 2)
    {
        cout << 2 << ' ' << 2 << '\n';
        cout << 2 << ' ' << 1 << '\n';
        cout << 2 << ' ' << 1 << '\n';
        return 0;
    }

    priority_queue <pii> q;
    ll ansmax = 0;
    DFS2(1,-1);
    podd[cen].push_back(cen);
    for(int i = 0 ; i < t[cen].size() ;i++)
    {
        dep[t[cen][i]] = 1;
        DFS3(t[cen][i],cen,t[cen][i]);
        ansmax += sumdep[t[cen][i]];
        q.push({podd[t[cen][i]].size(),t[cen][i]});

        /*cout << t[cen][i] << ": " ;
        for(int j = 0; j < podd[t[cen][i]].size() ; j++)
        {
            cout << podd[t[cen][i]][j] << ' ';
        }
        cout << '\n';*/
    }


    if(N%2)
    {
        A = q.top().nd;
        q.pop();
        B = q.top().nd;
        q.pop();

        tabmax[podd[A][podd[A].size()-1]] = cen;
        tabmax[cen] = podd[B][podd[B].size()-1];
        tabmax[podd[B][podd[B].size()-1]] = podd[A][podd[A].size()-1];
        podd[A].pop_back();
        podd[B].pop_back();

        if(podd[A].size() > 0)q.push({podd[A].size(),A});
        if(podd[B].size() > 0)q.push({podd[B].size(),B});
    }
    else
    {
        q.push({1,cen});
    }
    
    
    while(!q.empty())
    {
        A = q.top().nd;
        q.pop();
        B = q.top().nd;
        q.pop();

        tabmax[podd[A][podd[A].size()-1]] = podd[B][podd[B].size()-1];
        tabmax[podd[B][podd[B].size()-1]] = podd[A][podd[A].size()-1];
        podd[A].pop_back();
        podd[B].pop_back();

        if(podd[A].size() > 0)q.push({podd[A].size(),A});
        if(podd[B].size() > 0)q.push({podd[B].size(),B});
    }

    cout << 1 << ' ' << ansmax*2 << '\n';
    for(int i = 1 ; i <= N ; i++)cout << tabmin[i]+2 << ' '; cout << '\n';
    for(int i = 1 ; i <= N ; i++)cout << tabmax[i] << ' '; cout << '\n';



    


    return 0;
}

Compilation message

Village.cpp: In function 'void DFS(int, int)':
Village.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i = 0 ;i < t[v].size();i++)
      |                    ~~^~~~~~~~~~~~~
Village.cpp:26:8: warning: variable 'ind' set but not used [-Wunused-but-set-variable]
   26 |     ll ind = -1;
      |        ^~~
Village.cpp: In function 'void DFS2(int, int)':
Village.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for(int i = 0; i < t[v].size() ;i++)
      |                    ~~^~~~~~~~~~~~~
Village.cpp: In function 'void DFS3(int, int, int)':
Village.cpp:83:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |     for(int i = 0 ;i < t[v].size() ;i++)
      |                    ~~^~~~~~~~~~~~~
Village.cpp: In function 'int main()':
Village.cpp:118:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  118 |     for(int i = 0 ; i < t[cen].size() ;i++)
      |                     ~~^~~~~~~~~~~~~~~
Village.cpp:173:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  173 |     for(int i = 1 ; i <= N ; i++)cout << tabmin[i]+2 << ' '; cout << '\n';
      |     ^~~
Village.cpp:173:62: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  173 |     for(int i = 1 ; i <= N ; i++)cout << tabmin[i]+2 << ' '; cout << '\n';
      |                                                              ^~~~
Village.cpp:174:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  174 |     for(int i = 1 ; i <= N ; i++)cout << tabmax[i] << ' '; cout << '\n';
      |     ^~~
Village.cpp:174:60: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  174 |     for(int i = 1 ; i <= N ; i++)cout << tabmax[i] << ' '; cout << '\n';
      |                                                            ^~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 6 ms 9816 KB Partially correct
2 Partially correct 4 ms 9820 KB Partially correct
3 Correct 4 ms 9820 KB Output is correct
4 Partially correct 4 ms 9820 KB Partially correct
5 Partially correct 4 ms 9820 KB Partially correct
6 Partially correct 5 ms 9816 KB Partially correct
7 Partially correct 5 ms 9820 KB Partially correct
8 Partially correct 5 ms 9820 KB Partially correct
9 Partially correct 4 ms 9820 KB Partially correct
10 Partially correct 4 ms 9820 KB Partially correct
11 Partially correct 4 ms 9820 KB Partially correct
12 Partially correct 4 ms 9820 KB Partially correct
13 Partially correct 4 ms 9820 KB Partially correct
14 Partially correct 4 ms 9820 KB Partially correct
15 Partially correct 4 ms 9816 KB Partially correct
16 Partially correct 5 ms 9816 KB Partially correct
17 Partially correct 4 ms 9820 KB Partially correct

Subtask #2
19.0 / 38.0

# Verdict Execution time Memory Grader output
1 Partially correct 4 ms 9820 KB Partially correct
2 Partially correct 4 ms 9816 KB Partially correct
3 Partially correct 4 ms 9820 KB Partially correct
4 Partially correct 4 ms 9820 KB Partially correct
5 Partially correct 4 ms 9816 KB Partially correct
6 Partially correct 4 ms 9820 KB Partially correct
7 Partially correct 4 ms 9820 KB Partially correct
8 Partially correct 4 ms 9808 KB Partially correct
9 Partially correct 6 ms 10328 KB Partially correct
10 Partially correct 5 ms 9820 KB Partially correct
11 Partially correct 4 ms 9808 KB Partially correct
12 Partially correct 7 ms 9816 KB Partially correct
13 Partially correct 4 ms 9872 KB Partially correct
14 Partially correct 5 ms 9820 KB Partially correct
15 Partially correct 4 ms 9820 KB Partially correct
16 Partially correct 4 ms 9820 KB Partially correct
17 Partially correct 5 ms 9820 KB Partially correct
18 Partially correct 5 ms 9768 KB Partially correct
19 Partially correct 5 ms 9820 KB Partially correct
20 Partially correct 4 ms 9820 KB Partially correct
21 Partially correct 5 ms 9820 KB Partially correct
22 Partially correct 5 ms 9820 KB Partially correct
23 Partially correct 5 ms 9820 KB Partially correct
24 Partially correct 5 ms 9820 KB Partially correct
25 Partially correct 4 ms 9820 KB Partially correct
26 Partially correct 4 ms 9816 KB Partially correct
27 Partially correct 5 ms 9820 KB Partially correct
28 Partially correct 4 ms 9820 KB Partially correct
29 Partially correct 5 ms 9816 KB Partially correct
30 Partially correct 5 ms 9820 KB Partially correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 6 ms 9816 KB Partially correct
2 Partially correct 4 ms 9820 KB Partially correct
3 Correct 4 ms 9820 KB Output is correct
4 Partially correct 4 ms 9820 KB Partially correct
5 Partially correct 4 ms 9820 KB Partially correct
6 Partially correct 5 ms 9816 KB Partially correct
7 Partially correct 5 ms 9820 KB Partially correct
8 Partially correct 5 ms 9820 KB Partially correct
9 Partially correct 4 ms 9820 KB Partially correct
10 Partially correct 4 ms 9820 KB Partially correct
11 Partially correct 4 ms 9820 KB Partially correct
12 Partially correct 4 ms 9820 KB Partially correct
13 Partially correct 4 ms 9820 KB Partially correct
14 Partially correct 4 ms 9820 KB Partially correct
15 Partially correct 4 ms 9816 KB Partially correct
16 Partially correct 5 ms 9816 KB Partially correct
17 Partially correct 4 ms 9820 KB Partially correct
18 Partially correct 4 ms 9820 KB Partially correct
19 Partially correct 4 ms 9816 KB Partially correct
20 Partially correct 4 ms 9820 KB Partially correct
21 Partially correct 4 ms 9820 KB Partially correct
22 Partially correct 4 ms 9816 KB Partially correct
23 Partially correct 4 ms 9820 KB Partially correct
24 Partially correct 4 ms 9820 KB Partially correct
25 Partially correct 4 ms 9808 KB Partially correct
26 Partially correct 6 ms 10328 KB Partially correct
27 Partially correct 5 ms 9820 KB Partially correct
28 Partially correct 4 ms 9808 KB Partially correct
29 Partially correct 7 ms 9816 KB Partially correct
30 Partially correct 4 ms 9872 KB Partially correct
31 Partially correct 5 ms 9820 KB Partially correct
32 Partially correct 4 ms 9820 KB Partially correct
33 Partially correct 4 ms 9820 KB Partially correct
34 Partially correct 5 ms 9820 KB Partially correct
35 Partially correct 5 ms 9768 KB Partially correct
36 Partially correct 5 ms 9820 KB Partially correct
37 Partially correct 4 ms 9820 KB Partially correct
38 Partially correct 5 ms 9820 KB Partially correct
39 Partially correct 5 ms 9820 KB Partially correct
40 Partially correct 5 ms 9820 KB Partially correct
41 Partially correct 5 ms 9820 KB Partially correct
42 Partially correct 4 ms 9820 KB Partially correct
43 Partially correct 4 ms 9816 KB Partially correct
44 Partially correct 5 ms 9820 KB Partially correct
45 Partially correct 4 ms 9820 KB Partially correct
46 Partially correct 5 ms 9816 KB Partially correct
47 Partially correct 5 ms 9820 KB Partially correct
48 Partially correct 44 ms 18452 KB Partially correct
49 Partially correct 51 ms 19148 KB Partially correct
50 Partially correct 46 ms 19140 KB Partially correct
51 Partially correct 38 ms 17128 KB Partially correct
52 Partially correct 50 ms 19084 KB Partially correct
53 Partially correct 41 ms 18148 KB Partially correct
54 Partially correct 31 ms 17740 KB Partially correct
55 Partially correct 57 ms 25936 KB Partially correct
56 Partially correct 58 ms 22540 KB Partially correct
57 Partially correct 49 ms 21436 KB Partially correct
58 Partially correct 50 ms 20308 KB Partially correct
59 Partially correct 61 ms 19256 KB Partially correct
60 Partially correct 60 ms 23232 KB Partially correct
61 Partially correct 58 ms 20032 KB Partially correct
62 Partially correct 43 ms 19548 KB Partially correct
63 Partially correct 41 ms 18856 KB Partially correct
64 Partially correct 44 ms 19536 KB Partially correct
65 Partially correct 42 ms 19572 KB Partially correct
66 Partially correct 51 ms 18836 KB Partially correct
67 Partially correct 37 ms 17364 KB Partially correct
68 Partially correct 38 ms 18000 KB Partially correct
69 Partially correct 47 ms 19672 KB Partially correct
70 Partially correct 40 ms 19028 KB Partially correct
71 Partially correct 30 ms 16724 KB Partially correct
72 Partially correct 32 ms 17492 KB Partially correct
73 Partially correct 46 ms 19660 KB Partially correct
74 Partially correct 44 ms 18768 KB Partially correct
75 Partially correct 49 ms 19468 KB Partially correct
76 Partially correct 58 ms 18960 KB Partially correct
77 Partially correct 41 ms 19148 KB Partially correct
78 Partially correct 31 ms 16216 KB Partially correct
79 Partially correct 37 ms 17248 KB Partially correct
80 Partially correct 46 ms 19580 KB Partially correct
81 Partially correct 51 ms 19540 KB Partially correct
82 Partially correct 39 ms 19280 KB Partially correct