oj.uz

Submission #306100

# Submission time Handle Problem Language Result Execution time Memory
306100 2020-09-24T13:59:09 Z Vimmer Comparing Plants (IOI20_plants) C++14
5 / 100
 269 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;

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));

        vector <int> val(sz(gr));

        vector <pair <int, int> > nxt(sz(gr));

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

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

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

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

        while (sz(se) > 0)
        {
            int ps = (*se.rbegin()).S;

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

            int pos = gr[ps];

            h[pos] = 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 (gr[l] < gr[r]) val[r] = gr[r] - gr[l];
                  else val[r] = n - gr[l] + gr[r];

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

            upd(1, 0, n - 1, max(0, pos - k + 1), pos - 1);

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

	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, {2, 3, 1, 0, 3, 1, 2});
//
//    for (int i = 0; i < 7; i++) cout << h[i] << " ";
//}

Subtask #1
5.0 / 5.0

# 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 13 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 75 ms 17272 KB Output is correct
7 Correct 122 ms 18936 KB Output is correct
8 Correct 269 ms 34552 KB Output is correct
9 Correct 265 ms 34168 KB Output is correct
10 Correct 262 ms 34296 KB Output is correct
11 Correct 225 ms 35576 KB Output is correct
12 Correct 227 ms 38904 KB Output is correct
13 Correct 256 ms 43384 KB Output is correct
14 Correct 236 ms 43344 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 12 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 15 ms 14464 KB Output is correct
7 Correct 103 ms 17656 KB Output is correct
8 Incorrect 14 ms 14464 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 12 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 15 ms 14464 KB Output is correct
7 Correct 103 ms 17656 KB Output is correct
8 Incorrect 14 ms 14464 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Incorrect 82 ms 17400 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 11 ms 14464 KB Output is correct
5 Incorrect 13 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 11 ms 14464 KB Output is correct
2 Correct 11 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Incorrect 12 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 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 11 ms 14464 KB Output is correct
6 Correct 75 ms 17272 KB Output is correct
7 Correct 122 ms 18936 KB Output is correct
8 Correct 269 ms 34552 KB Output is correct
9 Correct 265 ms 34168 KB Output is correct
10 Correct 262 ms 34296 KB Output is correct
11 Correct 225 ms 35576 KB Output is correct
12 Correct 227 ms 38904 KB Output is correct
13 Correct 256 ms 43384 KB Output is correct
14 Correct 236 ms 43344 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 12 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 15 ms 14464 KB Output is correct
21 Correct 103 ms 17656 KB Output is correct
22 Incorrect 14 ms 14464 KB Output isn't correct
23 Halted 0 ms 0 KB -