oj.uz

Submission #306108

# Submission time Handle Problem Language Result Execution time Memory
306108 2020-09-24T14:19:46 Z Vimmer Comparing Plants (IOI20_plants) C++14
49 / 100
 701 ms 43388 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)
        {
            int ps = (*se.rbegin()).S;

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

            st.erase(ps);

            h[ps] = cur--;

            if (sz(se) != 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;

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

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

                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});
            }
        }
    }

	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;

    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, {1, 0, 0, 3, 3, 3, 3});
//
//    for (int i = 0; i < 7; i++) cout << h[i] << " ";
//}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 76 ms 17400 KB Output is correct
7 Correct 101 ms 18936 KB Output is correct
8 Correct 223 ms 34424 KB Output is correct
9 Correct 222 ms 34168 KB Output is correct
10 Correct 234 ms 34168 KB Output is correct
11 Correct 228 ms 35604 KB Output is correct
12 Correct 222 ms 38908 KB Output is correct
13 Correct 230 ms 43368 KB Output is correct
14 Correct 226 ms 43384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 14 ms 14592 KB Output is correct
7 Correct 87 ms 17708 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 13 ms 14592 KB Output is correct
10 Correct 92 ms 17656 KB Output is correct
11 Correct 87 ms 17816 KB Output is correct
12 Correct 88 ms 17784 KB Output is correct
13 Correct 88 ms 17656 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 14 ms 14592 KB Output is correct
7 Correct 87 ms 17708 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 13 ms 14592 KB Output is correct
10 Correct 92 ms 17656 KB Output is correct
11 Correct 87 ms 17816 KB Output is correct
12 Correct 88 ms 17784 KB Output is correct
13 Correct 88 ms 17656 KB Output is correct
14 Correct 128 ms 18684 KB Output is correct
15 Correct 672 ms 28536 KB Output is correct
16 Correct 144 ms 18564 KB Output is correct
17 Correct 672 ms 28536 KB Output is correct
18 Correct 668 ms 38256 KB Output is correct
19 Correct 412 ms 28408 KB Output is correct
20 Correct 596 ms 28664 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 82 ms 17400 KB Output is correct
4 Correct 472 ms 34900 KB Output is correct
5 Correct 559 ms 30028 KB Output is correct
6 Correct 660 ms 28792 KB Output is correct
7 Correct 701 ms 28364 KB Output is correct
8 Correct 689 ms 28536 KB Output is correct
9 Correct 528 ms 33228 KB Output is correct
10 Correct 509 ms 30004 KB Output is correct
11 Correct 224 ms 43388 KB Output is correct
12 Correct 360 ms 28408 KB Output is correct
13 Correct 638 ms 42220 KB Output is correct

Subtask #5
0 / 11.0

# 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 11 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Incorrect 11 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 12 ms 14464 KB Output is correct
2 Correct 12 ms 14496 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Incorrect 11 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 11 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 76 ms 17400 KB Output is correct
7 Correct 101 ms 18936 KB Output is correct
8 Correct 223 ms 34424 KB Output is correct
9 Correct 222 ms 34168 KB Output is correct
10 Correct 234 ms 34168 KB Output is correct
11 Correct 228 ms 35604 KB Output is correct
12 Correct 222 ms 38908 KB Output is correct
13 Correct 230 ms 43368 KB Output is correct
14 Correct 226 ms 43384 KB Output is correct
15 Correct 12 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 11 ms 14464 KB Output is correct
18 Correct 11 ms 14464 KB Output is correct
19 Correct 11 ms 14464 KB Output is correct
20 Correct 14 ms 14592 KB Output is correct
21 Correct 87 ms 17708 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 13 ms 14592 KB Output is correct
24 Correct 92 ms 17656 KB Output is correct
25 Correct 87 ms 17816 KB Output is correct
26 Correct 88 ms 17784 KB Output is correct
27 Correct 88 ms 17656 KB Output is correct
28 Correct 128 ms 18684 KB Output is correct
29 Correct 672 ms 28536 KB Output is correct
30 Correct 144 ms 18564 KB Output is correct
31 Correct 672 ms 28536 KB Output is correct
32 Correct 668 ms 38256 KB Output is correct
33 Correct 412 ms 28408 KB Output is correct
34 Correct 596 ms 28664 KB Output is correct
35 Correct 12 ms 14464 KB Output is correct
36 Correct 12 ms 14464 KB Output is correct
37 Correct 82 ms 17400 KB Output is correct
38 Correct 472 ms 34900 KB Output is correct
39 Correct 559 ms 30028 KB Output is correct
40 Correct 660 ms 28792 KB Output is correct
41 Correct 701 ms 28364 KB Output is correct
42 Correct 689 ms 28536 KB Output is correct
43 Correct 528 ms 33228 KB Output is correct
44 Correct 509 ms 30004 KB Output is correct
45 Correct 224 ms 43388 KB Output is correct
46 Correct 360 ms 28408 KB Output is correct
47 Correct 638 ms 42220 KB Output is correct
48 Correct 11 ms 14464 KB Output is correct
49 Correct 10 ms 14464 KB Output is correct
50 Correct 11 ms 14464 KB Output is correct
51 Correct 11 ms 14464 KB Output is correct
52 Incorrect 11 ms 14464 KB Output isn't correct
53 Halted 0 ms 0 KB -