oj.uz

Submission #308883

# Submission time Handle Problem Language Result Execution time Memory
308883 2020-10-02T06:53:53 Z Vimmer Comparing Plants (IOI20_plants) C++14
32 / 100
 676 ms 43384 KB 
#include <bits/stdc++.h>
#include "plants.h"
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

#define N 200005
#define PB push_back
#define sz(x) int(x.size())
#define P 31
#define F first
#define M ll(1e9 + 7)
#define S second
#define all(x) x.begin(), x.end()
//#define endl '\n'

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;

//typedef tree<int, null_type, less_equal <int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

ll mlt(ll a, ll b) {return (a * b) % M;}
ll sm(ll a, ll b) {return (a + b) % M;}

int id, K, h[N];

array <int, 2> t[N * 4];

int psh[N * 4], n, val[N];

pair <int, int> nxt[N];

vector <pair <int, int> > gt[N];

vector <int> a;

set <int> g[N];


void Push(int v, int tl, int tr)
{
    t[v][0] += psh[v];

    t[v][0] = max(t[v][0], 0);

    if (tl != tr)
    {
        psh[v + v] += psh[v];

        psh[v + v + 1] += psh[v];
    }

    psh[v] = 0;
}


void com(int v)
{
    if (t[v + v][0] < t[v + v + 1][0]) t[v] = t[v + v];
     else t[v] = t[v + v + 1];
}

void bld(int v, int tl, int tr)
{
    if (tl == tr) t[v] = {a[tl], tl};
    else
    {
        int md = (tl + tr) >> 1;

        bld(v + v, tl, md);

        bld(v + v + 1, md + 1, tr);

        com(v);
    }
}

void upd(int v, int tl, int tr, int ps)
{
    Push(v, tl, tr);

    if (tr < ps || ps < tl) return;

    if (tl == tr) t[v] = {int(1e9), tl};
      else
      {
          int md = (tl + tr) >> 1;

          upd(v + v, tl, md, ps);

          upd(v + v + 1, md + 1, tr, ps);

          com(v);
      }
}

void upd(int v, int tl, int tr, int l, int r)
{
    Push(v, tl, tr);

    if (tr < l || r < tl || l > r || tl > tr) return;

    if (l <= tl && tr <= r) {psh[v]--; Push(v, tl, tr); return;}

    int md = (tl + tr) >> 1;

    upd(v + v, tl, md, l, r);

    upd(v + v + 1, md + 1, tr, l, r);

    com(v);
}

void dfs(int v)
{
    pair <int, int> pt;

    pt.F = id++;

    for (auto it : g[v])
      dfs(it);

    pt.S = id++;

    gt[v].PB(pt);
}

void init(int k, vector<int> r)
{
    K = k;

    n = sz(r);

    if (k == 2)
    {
        set <int> se; se.clear();

        for (int i = 0; i < sz(r); i++) se.insert(i);

        for (int i = 0; i < sz(r); i++)
        {
            int nxt = (i + 1) % sz(r);

            if (r[i] == 1) {g[nxt].insert(i); se.erase(i);}
              else {g[i].insert(nxt);se.erase(nxt);}
        }

        for (auto it : se) dfs(it);

        return;
    }

    a = r;

    bld(1, 0, n - 1);

    int cur = n;

    while (cur > 0)
    {
        vector <int> gr; gr.clear();

        while (t[1][0] == 0)
        {
            gr.PB(t[1][1]);

            upd(1, 0, n - 1, t[1][1]);
        }

        sort(all(gr));

        set <pair <int, int> > se; se.clear();

        set <int> st; st.clear();

        for (int i = 0; i < sz(gr); i++)
        {
            int x = gr[i];

            st.insert(x);

            if (i == 0) {nxt[x].F = gr.back(); val[x] = gr[i] + n - gr.back();}
              else {nxt[x].F = gr[i - 1]; val[x] = gr[i] - gr[i - 1];}

            if (i + 1 == sz(gr)) nxt[x].S = gr[0];
              else nxt[x].S = gr[i + 1];

            se.insert({val[x], x});
        }


        while (sz(se) > 0)
        {
//            cout << "Saved: "; for (auto it : se) cout << it.S << " "; cout << endl;

            vector <int> pr; pr.clear();

            while (sz(se) > 0 && ((*se.rbegin()).F >= K || (*se.rbegin()).F == 0 || sz(pr) == 0))
            {
                int ps = (*se.rbegin()).S;

                se.erase(*se.rbegin());

                st.erase(ps);

                pr.PB(ps);

                h[ps] = cur;
            }

            cur -= sz(pr);

            for (int i = 0; i < sz(pr); i++)
            {
                int ps = pr[i];

//                cout << "maked: " << ps << endl;

                if (sz(st) != 0)
                {
                    nxt[nxt[ps].F].S = nxt[ps].S;

                    nxt[nxt[ps].S].F = nxt[ps].F;

                    int l = nxt[ps].F, r = nxt[ps].S;

                    bool f = 0;

                    if (se.find({val[r], r}) != se.end()) {f = 1; se.erase({val[r], r});}

                    if (l < r) val[r] = r - l;
                      else val[r] = n - l + r;

                    if (f) se.insert({val[r], r});
                }
                upd(1, 0, n - 1, max(0, ps - k + 1), ps - 1);

                if (ps - k + 1 < 0) upd(1, 0, n - 1, n - abs(ps - k + 1), n - 1);

                while (t[1][0] == 0)
                {
                    int ps = t[1][1];

                    upd(1, 0, n - 1, ps);

                    if (sz(st) == 0)
                    {
                        nxt[ps].F = nxt[ps].S = ps;

                        val[ps] = 0;
                    }
                    else
                    {

                        auto it = st.upper_bound(ps);

                        int l, r;

                        if (it == st.end())
                        {
                            r = *st.begin();

                            it--;

                            l = *it;
                        }
                        else if (it == st.begin())
                        {
                            r = *it;

                            l = *st.rbegin();
                        }
                        else
                        {
                            r = *it;

                            it--;

                            l = *it;
                        }

                        se.erase({val[r], r});

                        nxt[r].F = nxt[l].S = ps;

                        nxt[ps].F = l; nxt[ps].S = r;

                        if (l < ps) val[ps] = ps - l;
                          else val[ps] = n - l + ps;

                        if (ps < r) val[r] = r - ps;
                          else val[r] = n - ps + r;

                        se.insert({val[r], r});
                    }

                    st.insert(ps);

                    se.insert({val[ps], ps});

//                    cout << val[ps] << " " << ps << endl;
                }
            }
        }
    }

	return;
}

int compare_plants(int x, int y)
{
    if (K == 2)
    {
        for (auto it : gt[x])
          for (auto itr : gt[y])
            if (it.F <= itr.F && itr.S <= it.S) return 1;
              else if (itr.F <= it.F && it.S <= itr.S) return -1;

        return 0;
    }

    if (h[x] > h[y]) return 1;

    if (h[x] == h[y]) return 0;

    return -1;
}

//int main()
//{
////    freopen("help.in", "r", stdin); freopen("help.out", "w", stdout);
//
//    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//
//    init(4, {0, 1, 3, 3, 3, 2, 3, 1, 0});
//
//    for (int i = 0; i < 9; i++) cout << h[i] << " ";
//}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 74 ms 17272 KB Output is correct
7 Correct 98 ms 18936 KB Output is correct
8 Correct 214 ms 34424 KB Output is correct
9 Correct 210 ms 34040 KB Output is correct
10 Correct 220 ms 34424 KB Output is correct
11 Correct 214 ms 35704 KB Output is correct
12 Correct 214 ms 39032 KB Output is correct
13 Correct 215 ms 43384 KB Output is correct
14 Correct 214 ms 43384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 13 ms 14592 KB Output is correct
7 Correct 86 ms 17612 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 14 ms 14592 KB Output is correct
10 Correct 85 ms 17656 KB Output is correct
11 Correct 84 ms 17784 KB Output is correct
12 Correct 83 ms 17708 KB Output is correct
13 Correct 84 ms 17656 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 13 ms 14592 KB Output is correct
7 Correct 86 ms 17612 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 14 ms 14592 KB Output is correct
10 Correct 85 ms 17656 KB Output is correct
11 Correct 84 ms 17784 KB Output is correct
12 Correct 83 ms 17708 KB Output is correct
13 Correct 84 ms 17656 KB Output is correct
14 Correct 123 ms 18672 KB Output is correct
15 Correct 629 ms 28540 KB Output is correct
16 Correct 121 ms 18552 KB Output is correct
17 Correct 642 ms 28408 KB Output is correct
18 Correct 676 ms 38384 KB Output is correct
19 Correct 404 ms 28536 KB Output is correct
20 Correct 586 ms 28412 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 81 ms 17472 KB Output is correct
4 Correct 457 ms 34928 KB Output is correct
5 Incorrect 560 ms 29944 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Incorrect 10 ms 14464 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Incorrect 10 ms 14464 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 74 ms 17272 KB Output is correct
7 Correct 98 ms 18936 KB Output is correct
8 Correct 214 ms 34424 KB Output is correct
9 Correct 210 ms 34040 KB Output is correct
10 Correct 220 ms 34424 KB Output is correct
11 Correct 214 ms 35704 KB Output is correct
12 Correct 214 ms 39032 KB Output is correct
13 Correct 215 ms 43384 KB Output is correct
14 Correct 214 ms 43384 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 10 ms 14464 KB Output is correct
17 Correct 11 ms 14464 KB Output is correct
18 Correct 10 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 13 ms 14592 KB Output is correct
21 Correct 86 ms 17612 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 14 ms 14592 KB Output is correct
24 Correct 85 ms 17656 KB Output is correct
25 Correct 84 ms 17784 KB Output is correct
26 Correct 83 ms 17708 KB Output is correct
27 Correct 84 ms 17656 KB Output is correct
28 Correct 123 ms 18672 KB Output is correct
29 Correct 629 ms 28540 KB Output is correct
30 Correct 121 ms 18552 KB Output is correct
31 Correct 642 ms 28408 KB Output is correct
32 Correct 676 ms 38384 KB Output is correct
33 Correct 404 ms 28536 KB Output is correct
34 Correct 586 ms 28412 KB Output is correct
35 Correct 11 ms 14464 KB Output is correct
36 Correct 10 ms 14464 KB Output is correct
37 Correct 81 ms 17472 KB Output is correct
38 Correct 457 ms 34928 KB Output is correct
39 Incorrect 560 ms 29944 KB Output isn't correct
40 Halted 0 ms 0 KB -