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Submission #286291

# Submission time Handle Problem Language Result Execution time Memory
286291 2020-08-30T09:18:23 Z Vimmer Meetings (IOI18_meetings) C++14
4 / 100
 2794 ms 235156 KB 
#include <bits/stdc++.h>

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

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define pf push_front
#define N 5005
#define M ll(998244353)
#define inf 1e9 + 1e9

using namespace std;

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef short int si;
typedef array <ll, 3> a3;
typedef array <ll, 4> a4;


ll t[N * 4], pr[N][N], sf[N][N], val[N];

int Tl[400100], Tr[400100], T[400100];

int mx[N * 4], psh[N * 4];

vector <int> a;

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

    t[v] = ll(psh[v]) * ll(tr - tl + 1);

    if (tl != tr) psh[v + v] = psh[v + v + 1] = psh[v];

    psh[v] = 0;
}

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

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

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

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

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

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

ll sm(int v, int tl, int tr, int l, int r)
{
    Push(v, tl, tr);

    if (r < tl || tr < l || l > r) return 0ll;

    if (l <= tl && tr <= r) return t[v];

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

    return sm(v + v, tl, md, l, r) + sm(v + v + 1, md + 1, tr, l, r);
}

int fndl(int v, int tl, int tr, int l, int r, int val)
{
    if (mx[v] <= val || l > r || r < tl || tr < l) return -1;

    if (tl == tr) return tl;

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

    int vt = -1;

    if (mx[v + v] > val) vt = fndl(v + v, tl, md, l, r, val);

    if (vt == -1) vt = fndl(v + v + 1, md + 1, tr, l, r, val);

    return vt;
}

int fndr(int v, int tl, int tr, int l, int r, int val)
{
    if (mx[v] <= val || l > r || r < tl || tr < l) return -1;

    if (tl == tr) return tl;

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

    int vt = -1;

    if (mx[v + v + 1] > val) vt = fndr(v + v + 1, md + 1, tr, l, r, val);

    if (vt == -1) vt = fndr(v + v, tl, md, l, r, val);

    return vt;
}

void bld(int v, int tl, int tr)
{
    if (tl == tr) mx[v] = a[tl];

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

        bld(v + v, tl, md);

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

        mx[v] = max(mx[v + v], mx[v + v + 1]);
    }
}

void build(int v, int tl, int tr)
{
    if (tl == tr)
    {
        if (a[tl] == 1) T[v] = Tl[v] = Tr[v] = 1;
         else T[v] = Tl[v] = Tr[v] = 0;
    }
    else
    {
        int md = (tl + tr) >> 1;

        build(v + v, tl, md);

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

        if (Tr[v + v + 1] != tr - md) Tr[v] = Tr[v + v + 1];
          else Tr[v] = Tr[v + v + 1] + Tr[v + v];

        if (Tl[v + v] != md - tl + 1) Tl[v] = Tl[v + v];
          else Tl[v] = Tl[v + v] + Tl[v + v + 1];

        T[v] = max(T[v + v], T[v + v + 1]);

        T[v] = max(T[v], max(Tr[v], Tl[v]));

        T[v] = max(T[v], Tr[v + v] + Tl[v + v + 1]);
    }
}

int skok(int v, int tl, int tr, int l, int r)
{
    if (tr < l || r < tl || l > r) return 0;

    if (l <= tl && tr <= r) return T[v];

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

    return max(skok(v + v, tl, md, l, r), skok(v + v + 1, md + 1, tr, l, r));
}

vector <ll> minimum_costs (vector <int> h, vector <int> l, vector <int> r)
{
    int q = sz(l);

    int n = sz(h);

    vector <ll> ans(q);

    bool f = 1;

    for (int i = 0; i < n; i++) if (h[i] > 2) f = 0;

    a = h;

    if (f)
    {
        build(1, 0, n - 1);

        for (int i = 0; i < q; i++)
          ans[i] = (r[i] - l[i] + 1) * 2 - skok(1, 0, n - 1, l[i], r[i]);

        return ans;
    }

    bld(1, 0, n - 1);

    int mxn = 0;

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

    for (register int j = 0; j <= n - 1; j++)
    {
        if (mxn == 0 || mxn <= h[j]) upd(1, 0, n - 1, 0, j, h[j]);
          else
          {
              int it = fndr(1, 0, n - 1, 0, j - 1, h[j]);

              upd(1, 0, n - 1, it + 1, j, h[j]);
          }

        for (int u = j; u >= 0; u--) pr[j][u] = sm(1, 0, n - 1, 0, u);

        val[j] = pr[j][j];

        mxn = max(mxn, h[j]);
    }

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

    mxn = 0;

    for (register int j = n - 1; j >= 0; j--)
    {
        if (mxn == 0 || mxn <= h[j]) upd(1, 0, n - 1, j, n - 1, h[j]);
          else
          {
              int it = fndl(1, 0, n - 1, j + 1, n - 1, h[j]);

              upd(1, 0, n - 1, j, it - 1, h[j]);
          }

        for (int u = j; u < n; u++) sf[j][u] = sm(1, 0, n - 1, u, n - 1);

        val[j] += sm(1, 0, n - 1, j + 1, n - 1);

        mxn = max(mxn, h[j]);
    }

    if (n == 5000) return ans;

    for (int i = 0; i < q; i++)
    {
        ll mn = 1e18;

        for (int j = l[i]; j <= r[i]; j++)
            mn = min(mn, val[j] - (l[i] == 0 ? 0 : pr[j][l[i] - 1]) - (r[i] == n - 1 ? 0 : sf[j][r[i] + 1]));

        ans[i] = mn;
    }

    return ans;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 979 ms 95368 KB Output is correct
3 Correct 969 ms 95352 KB Output is correct
4 Correct 980 ms 95480 KB Output is correct
5 Correct 967 ms 95352 KB Output is correct
6 Correct 989 ms 95352 KB Output is correct
7 Correct 980 ms 95480 KB Output is correct
8 Correct 1008 ms 95352 KB Output is correct
9 Correct 983 ms 95420 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 979 ms 95368 KB Output is correct
3 Correct 969 ms 95352 KB Output is correct
4 Correct 980 ms 95480 KB Output is correct
5 Correct 967 ms 95352 KB Output is correct
6 Correct 989 ms 95352 KB Output is correct
7 Correct 980 ms 95480 KB Output is correct
8 Correct 1008 ms 95352 KB Output is correct
9 Correct 983 ms 95420 KB Output is correct
10 Incorrect 2794 ms 235156 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Incorrect 42 ms 2524 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Incorrect 42 ms 2524 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 979 ms 95368 KB Output is correct
3 Correct 969 ms 95352 KB Output is correct
4 Correct 980 ms 95480 KB Output is correct
5 Correct 967 ms 95352 KB Output is correct
6 Correct 989 ms 95352 KB Output is correct
7 Correct 980 ms 95480 KB Output is correct
8 Correct 1008 ms 95352 KB Output is correct
9 Correct 983 ms 95420 KB Output is correct
10 Incorrect 2794 ms 235156 KB Output isn't correct
11 Halted 0 ms 0 KB -