oj.uz

Submission #311604

# Submission time Handle Problem Language Result Execution time Memory
311604 2020-10-10T18:38:59 Z IgorI Comparing Plants (IOI20_plants) C++17
27 / 100
 4000 ms 91000 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 500000;
const ll INF = 1e18;

int c;
int n;
int H[N];
int k;

pair<ll, int> tree[4 * N];
ll push[4 * N];

pair<ll, int> Merge(pair<ll, int> a, pair<ll, int> b)
{
    return min(a, b);
}

void Push(int V)
{
    tree[2 * V + 1].first += push[V];
    tree[2 * V + 2].first += push[V];
    push[2 * V + 1] += push[V];
    push[2 * V + 2] += push[V];
    push[V] = 0;
}

void Build(int L, int R, int V, vector<int> &r)
{
    if (L + 1 == R)
    {
        tree[V] = {r[L], L};
        return;
    }
    int M = (L + R) / 2;
    Build(L, M, 2 * V + 1, r);
    Build(M, R, 2 * V + 2, r);
    tree[V] = Merge(tree[2 * V + 1], tree[2 * V + 2]);
}

pair<ll, int> Get(int l, int r, int L = 0, int R = n, int V = 0)
{
    if (r <= L || R <= l) return {INF, 0};
    if (l <= L && R <= r) return tree[V];
    int M = (L + R) / 2;
    Push(V);
    return Merge(Get(l, r, L, M, 2 * V + 1), Get(l, r, M, R, 2 * V + 2));
}

void Add(int l, int r, ll x, int L = 0, int R = n, int V = 0)
{
    if (r <= L || R <= l) return;
    if (l <= L && R <= r)
    {
        tree[V].first += x;
        push[V] += x;
        return;
    }
    int M = (L + R) / 2;
    Push(V);
    Add(l, r, x, L, M, 2 * V + 1);
    Add(l, r, x, M, R, 2 * V + 2);
    tree[V] = Merge(tree[2 * V + 1], tree[2 * V + 2]);
}

int CGet(int l, int r)
{
    if (l < 0)
    {
        l += n;
        pair<ll, int> a = Get(l, n);
        pair<ll, int> b = Get(0, r);
        if (a.first == 0) return a.second;
        if (b.first == 0) return b.second;
        return -1;
    }
    pair<ll, int> a = Get(l, r);
    if (a.first == 0) return a.second;
    return -1;
}

void CAdd(int l, int r, ll x)
{
    if (l < 0)
    {
        l += n;
        Add(l, n, x);
        Add(0, r, x);
    }
    else
    {
        Add(l, r, x);
    }
}

pair<ll, int> tree2[4 * N];

void Build2(int L = 0, int R = n, int V = 0)
{
    tree2[V] = {INF, L};
    if (L + 1 == R) return;
    int M = (L + R) / 2;
    Build2(L, M, 2 * V + 1);
    Build2(M, R, 2 * V + 2);
}

void Set2(int pos, int x, int L = 0, int R = n, int V = 0)
{
    if (L + 1 == R)
    {
        tree2[V] = {x, L};
        return;
    }
    int M = (L + R) / 2;
    if (pos < M) Set2(pos, x, L, M, 2 * V + 1);
    else Set2(pos, x, M, R, 2 * V + 2);
    tree2[V] = min(tree2[2 * V + 1], tree2[2 * V + 2]);
}

pair<ll, int> Get2(int l, int r, int L = 0, int R = n, int V = 0)
{
    if (r <= L || R <= l) return {INF, 0};
    if (l <= L && R <= r) return tree2[V];
    int M = (L + R) / 2;
    return min(Get2(l, r, L, M, 2 * V + 1), Get2(l, r, M, R, 2 * V + 2));
}

int up_left[N], up_right[N];

int CGet2(int l, int r)
{
    l = (l % n + n) % n;
    r = (r % n + n) % n;
    if (l > r)
    {
        if (l < 0) l += n;
        if (r > n) r -= n;
        pair<ll, int> a = Get2(l, n);
        pair<ll, int> b = Get2(0, r);
        if (a.first < INF) return a.second;
        if (b.first < INF) return b.second;
        return -1;
    }
    pair<ll, int> a = Get2(l, r);
    if (a.first < INF) return a.second;
    return -1;
}

void call(int i, int k, vector<int> &r, vector<int> &h1)
{
    int id = CGet(i - k + 1, i);
    while (id != -1)
    {
        call(id, k, r, h1);
        id = CGet(i - k + 1, i);
    }
    up_right[i] = CGet2(i + 1, i + k);
    up_left[i] = CGet2(i - k + 1, i);
    h1[i] = c--;
    Set2(i, h1[i]);
    CAdd(i - k + 1, i, -1);
    CAdd(i, i + 1, INF);
}

const int LG = 20;

ll le[LG][N], ri[LG][N];

void init(int K, vector<int> r)
{
    k = K;
    n = r.size();
    vector<int> h1(n);
    c = n;

    Build(0, n, 0, r);
    Build2();

    int id = CGet(0, n);
    while (id != -1)
    {
        call(id, k, r, h1);
        id = CGet(0, n);
    }
    for (int i = 0; i < n; i++)
    {
        H[i] = h1[i];
    }
    #ifdef LOCAL
    for (int i = 0; i < n; i++)
    {
        cout << H[i] << " ";
    }
    cout << endl;
    #endif // LOCAL
    for (int i = 0; i < n; i++)
    {
        le[0][i] = up_left[i];
        ri[0][i] = up_right[i];
    }
    for (int i = 0; 0 && i < n; i++)
    {
        if (up_left[i] != -1)
        {
            le[0][i] = i - up_left[i];
            if (le[0][i] < 0) le[0][i] += n;
        } else le[0][i] = INF;
        if (up_right[i] != -1)
        {
            ri[0][i] = up_right[i] - i;
            if (ri[0][i] < 0) ri[0][i] += n;
        } else ri[0][i] = INF;

        assert(le[0][i] < k || le[0][i] == INF);
        assert(ri[0][i] < k || ri[0][i] == INF);
    }
    for (int j = 1; j < LG; j++)
    {
        for (int i = 0; i < n; i++)
        {
            if (le[j - 1][i] < INF)
                le[j][i] = min(le[j - 1][i] + le[j - 1][((i - le[j - 1][i]) % n + n) % n], INF);
            else
                le[j][i] = INF;
            if (ri[j - 1][i] < INF)
                ri[j][i] = min(ri[j - 1][i] + ri[j - 1][(i + ri[j - 1][i]) % n], INF);
            else
                ri[j][i] = INF;
        }
    }
}

int Dist(int x, int y)
{
    if (x < y) return min(y - x, n - y + x);
    return min(x - y, n - x + y);
}

int compare_plants(int x, int y)
{
    if (Dist(x, y) < k)
    {
        if (H[x] <= H[y]) return -1;
        return 1;
    }

    ll d;
    d = x;
    while (Dist(d, y) >= k)
    {
        if (ri[0][d] == -1) break;
        d = ri[0][d];
    }
    if (Dist(d, y) < k && H[d] <= H[y]) return -1;
    d = x;
    while (Dist(d, y) >= k)
    {
        if (le[0][d] == -1) break;
        d = le[0][d];
    }
    if (Dist(d, y) < k && H[d] <= H[y]) return -1;

    swap(x, y);

    d = x;
    while (Dist(d, y) >= k)
    {
        if (ri[0][d] == -1) break;
        d = ri[0][d];
    }
    if (Dist(d, y) < k && H[d] <= H[y]) return 1;
    d = x;
    while (Dist(d, y) >= k)
    {
        if (le[0][d] == -1) break;
        d = le[0][d];
    }
    if (Dist(d, y) < k && H[d] <= H[y]) return 1;

    return 0;
}

#ifdef LOCAL
signed main()
{
    int n, k, q;
    cin >> n >> k >> q;
    vector<int> r(n);
    for (int i = 0; i < n; i++) cin >> r[i];
    init(k, r);
    while (q--)
    {
        int x, y;
        cin >> x >> y;
        cout << compare_plants(x, y) << endl;
    }
}
#endif

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 640 KB Output is correct
5 Correct 1 ms 640 KB Output is correct
6 Correct 71 ms 3576 KB Output is correct
7 Correct 226 ms 12764 KB Output is correct
8 Correct 643 ms 90872 KB Output is correct
9 Correct 724 ms 91000 KB Output is correct
10 Correct 1431 ms 91000 KB Output is correct
11 Execution timed out 4099 ms 90872 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 640 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 5 ms 1152 KB Output is correct
7 Correct 90 ms 5880 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 5 ms 1152 KB Output is correct
10 Correct 89 ms 5880 KB Output is correct
11 Correct 87 ms 5880 KB Output is correct
12 Correct 88 ms 6008 KB Output is correct
13 Correct 92 ms 5884 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 640 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 5 ms 1152 KB Output is correct
7 Correct 90 ms 5880 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 5 ms 1152 KB Output is correct
10 Correct 89 ms 5880 KB Output is correct
11 Correct 87 ms 5880 KB Output is correct
12 Correct 88 ms 6008 KB Output is correct
13 Correct 92 ms 5884 KB Output is correct
14 Correct 164 ms 12892 KB Output is correct
15 Correct 1359 ms 90996 KB Output is correct
16 Correct 160 ms 12768 KB Output is correct
17 Correct 1360 ms 90872 KB Output is correct
18 Correct 843 ms 91000 KB Output is correct
19 Correct 869 ms 90888 KB Output is correct
20 Correct 1164 ms 90928 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Incorrect 306 ms 4344 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 640 KB Output is correct
5 Incorrect 1 ms 640 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 672 KB Output is correct
5 Correct 4 ms 1152 KB Output is correct
6 Correct 1156 ms 90944 KB Output is correct
7 Correct 1738 ms 90840 KB Output is correct
8 Correct 1409 ms 90944 KB Output is correct
9 Correct 1367 ms 90832 KB Output is correct
10 Execution timed out 4070 ms 90988 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 640 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 640 KB Output is correct
5 Correct 1 ms 640 KB Output is correct
6 Correct 71 ms 3576 KB Output is correct
7 Correct 226 ms 12764 KB Output is correct
8 Correct 643 ms 90872 KB Output is correct
9 Correct 724 ms 91000 KB Output is correct
10 Correct 1431 ms 91000 KB Output is correct
11 Execution timed out 4099 ms 90872 KB Time limit exceeded
12 Halted 0 ms 0 KB -