oj.uz

Submission #790708

# Submission time Handle Problem Language Result Execution time Memory
790708 2023-07-23T06:42:31 Z resting Comparing Plants (IOI20_plants) C++17
27 / 100
 1133 ms 115456 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

#define time fuck

const int mx = 2e5 + 5;

int n, k;
struct segtree {
    int l, r, lz = 0, mn = 0;
    segtree* lc = 0, * rc = 0;
    segtree* getmem();
    segtree() : segtree(-1, -1) {};
    segtree(int l, int r) : l(l), r(r) {
        if (l == r)return;
        int m = (l + r) / 2;
        lc = getmem(); *lc = segtree(l, m);
        rc = getmem(); *rc = segtree(m + 1, r);
    }
    void apply(int v) {
        mn += v; lz += v;
    }
    void push() {
        if (l == r) return;
        lc->apply(lz);rc->apply(lz);
        lz = 0;
    }
    void pull() {
        if (l == r) return;
        mn = min(lc->mn, rc->mn);
    }
    void upd(int ql, int qr, int qv) {
        if (qr < 0) { ql += n; qr += n; }
        if (ql < 0) {
            upd(0, qr, qv);
            upd((n)+ql, (n - 1), qv);
            return;
        }
        if (ql >= n) { ql -= n; qr -= n; }
        if (qr >= n) {
            upd(ql, (n - 1), qv);
            upd(0, qr - (n), qv);
            return;
        }
        if (l > qr || r < ql) return;
        if (ql <= l && r <= qr) { apply(qv); return; }
        push();
        lc->upd(ql, qr, qv);
        rc->upd(ql, qr, qv);
        pull();
    }
    int extract_min() {
        if (l == r) return l;
        push();
        if (lc->mn == mn) return lc->extract_min();
        return rc->extract_min();
    }
}mem[mx * 8]; int memsz = 0;
segtree* segtree::getmem() { return &mem[memsz++]; }

const int inf = 1e9 + 7;
namespace rmq {
    struct segtree {
        int l, r;
        segtree* lc = 0, * rc = 0;
        pair<int, int> v = { -1, -1 };
        segtree* getmem();
        segtree() : segtree(-1, -1) {};
        segtree(int l, int r) : l(l), r(r) {
            if (l == r)return;
            int m = (l + r) / 2;
            lc = getmem(); *lc = segtree(l, m);
            rc = getmem(); *rc = segtree(m + 1, r);
        }
        void upd(int qi, int qv) {
            if (l == r) { v = { qv, qi };return; }
            if (qi <= lc->r) lc->upd(qi, qv);
            else rc->upd(qi, qv);
            v = max(lc->v, rc->v);
        }
        pair<int, int> q(int ql, int qr) {
            if (qr < 0) { ql += n; qr += n; }
            if (ql < 0) {
                return max(q(0, qr), q((n)+ql, (n - 1)));
            }
            if (ql >= n) { ql -= n; qr -= n; }
            if (qr >= n) {
                return max(q(ql, (n - 1)), q(0, qr - (n)));
            }
            if (l > qr || r < ql)return { -1, -1 };
            if (ql <= l && r <= qr) return v;
            return max(lc->q(ql, qr), rc->q(ql, qr));
        }
    }mem[mx * 4]; int memsz = 0;
    segtree* segtree::getmem() { return &mem[memsz++]; }
}


vector<int> time, rtime;
int parl[mx][20], parr[mx][20];

int cheat[500][500]{};
void init(int kk, std::vector<int> r) {
    n = r.size();k = kk;k--;
    time = rtime = vector<int>(n, 0);
    segtree parta(0, n - 1), partb(0, n - 1); partb.upd(0, n - 1, 1);
    for (int i = 0; i < n; i++) parta.upd(i, i, r[i]);
    for (int i = 0; i < n; i++) {
        while (parta.mn == 0) {
            int t = parta.extract_min();
            parta.upd(t, t, mx);
            partb.upd(t, t, -1);
            partb.upd(t + 1, t + k, 1);
        }
        int t = partb.extract_min();
        time[t] = i;
        rtime[i] = t;
        partb.upd(t, t, mx);
        partb.upd(t + 1, t + k, -1);
        parta.upd(t - k, t, -1);
    }
    rmq::segtree tim(0, n - 1);
    for (int i = 0; i < n; i++) {
        int t = tim.q(rtime[i] - k, rtime[i]).second;
        if (t == -1) parl[rtime[i]][0] = rtime[i];
        else parl[rtime[i]][0] = t;
        //   cout << "#" << t << endl;
        t = tim.q(rtime[i], rtime[i] + k).second;
        // cout << "#" << t << endl;
        if (t == -1) parr[rtime[i]][0] = rtime[i];
        else parr[rtime[i]][0] = t;
        tim.upd(rtime[i], i);
    }
    for (int i = 1; i < 20; i++) {
        for (int j = 0; j < n; j++) {
            if (parl[j][0] > j) parl[j][i] = parl[j][i - 1];
            else if (parl[parl[j][i - 1]][i - 1] > j) parl[j][i] = parl[j][i - 1];
            else parl[j][i] = parl[parl[j][i - 1]][i - 1];
        }
    }
    for (int i = 1; i < 20; i++) {
        for (int j = 0; j < n; j++) {
            if (parr[j][0] < j) parr[j][i] = parr[j][i - 1];
            else if (parr[parr[j][i - 1]][i - 1] < j) parr[j][i] = parr[j][i - 1];
            else parr[j][i] = parr[parr[j][i - 1]][i - 1];

        }
    }

    if (n <= 300) {
        for (int i = 0; i < n; i++) {
            for (int j = 1; j <= k; j++) {
                int j2 = (i + j) % n;
                if (time[j2] < time[i]) cheat[i][j2] = 1;
                else cheat[j2][i] = 1;
            }
        }
        for (int i = 0; i < n; i++) {
            for (int x = 0; x < n; x++) {
                for (int y = 0; y < n; y++) {
                    cheat[x][y] |= cheat[x][i] && cheat[i][y];
                }
            }
        }
    }
    return;
}

int compare_plants(int x, int y) {
    // if (n <= 300) {
    //     if (cheat[x][y]) return -1;
    //     if (cheat[y][x])return 1;
    //     return 0;
    // }
    //compare zero
    if (x + k >= y || y + k - n >= x) { return time[x] < time[y] ? 1 : -1; }
    // if (n <= 300) {
    //     //brute force


    // //compare one
    //     int t = x;
    //     for (int i = n; i >= 0; i--) {
    //         if (parr[t][0] + k < y) t = parr[t][0];
    //     }
    //     t = parr[t][0];
    //     if (t + k >= y && time[t] > time[y]) return -1;

    //     //compare two
    //     t = x;;
    //     while (parl[t][0] != t && parl[t][0] < t) t = parl[t][0];
    //     if (y + k - n >= t && time[t] > time[y]) return -1;
    //     if (t != parl[t][0]) {
    //         t = parl[t][0];
    //         for (int i = n; i >= 0; i--) {
    //             if (y + k < parl[t][0]) t = parl[t][0];
    //         }
    //         t = parl[t][0];
    //         if (y + k >= t && time[t] > time[y])return -1;
    //     }

    //     //compare three
    //     t = y;
    //     for (int i = n; i >= 0; i--) {
    //         if (x + k < parl[t][0]) t = parl[t][0];
    //     }
    //     t = parl[t][0];
    //     if (x + k >= t && time[t] > time[x]) return 1;

    //     //compare four
    //     t = y;
    //     while (parr[t][0] != t && parr[t][0] > t) t = parr[t][0];
    //     if (t + k - n >= x && time[t] > time[x]) return 1;
    //     if (t != parr[t][0]) {
    //         t = parr[t][0];
    //         for (int i = n; i >= 0; i--) {
    //             if (parr[t][0] + k < x) t = parr[t][0];
    //         }
    //         t = parr[t][0];
    //         if (t + k >= x && time[t] > time[x]) return 1;
    //     }
    // }

    //compare one
    int t = x;
    for (int i = 19; i >= 0; i--) {
        assert(parr[t][i] >= t);
        if (parr[t][i] + k < y) t = parr[t][i];
    }
    t = parr[t][0];
    if (t + k >= y && time[t] >= time[y]) return -1;

    //compare two
    t = x;
    for (int i = 19; i >= 0; i--) if (parl[t][i] < t && time[parl[t][i]] <= time[y]) t = parl[t][i];
    if (y + k - n >= t && time[t] >= time[y]) return -1;
    if (t != parl[t][0]) {
        t = parl[t][0];
        for (int i = 19; i >= 0; i--) {
            if (y + k < parl[t][i]) t = parl[t][i];
        }
        t = parl[t][0];
        if (y + k >= t && time[t] >= time[y])return -1;
    }

    //compare three
    t = y;
    for (int i = 19; i >= 0; i--) {
        if (x + k < parl[t][i]) t = parl[t][i];
    }
    t = parl[t][0];
    if (x + k >= t && time[t] >= time[x]) return 1;

    //compare four
    t = y;
    for (int i = 19; i >= 0; i--) {
        if (parr[t][i] > t && time[parr[t][i]] < time[x]) t = parr[t][i];
    }
    if (t + k - n >= x && time[t] >= time[x]) return 1;
    if (t != parr[t][0]) {
        t = parr[t][0];
        for (int i = 19; i >= 0; i--) {
            if (parr[t][i] + k < x) t = parr[t][i];
        }
        t = parr[t][0];
        if (t + k >= x && time[t] >= time[x]) return 1;
    }

    return 0;
}

// int main() {
//     init(3, { 0, 1, 1, 2 });
//     cout << compare_plants(0, 2) << endl;
//     cout << compare_plants(1, 2) << endl;
// }

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 75424 KB Output is correct
2 Correct 29 ms 75440 KB Output is correct
3 Correct 28 ms 75388 KB Output is correct
4 Correct 30 ms 75432 KB Output is correct
5 Incorrect 36 ms 75432 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 75392 KB Output is correct
2 Correct 30 ms 75340 KB Output is correct
3 Correct 29 ms 75344 KB Output is correct
4 Correct 29 ms 75436 KB Output is correct
5 Correct 31 ms 75588 KB Output is correct
6 Correct 32 ms 75664 KB Output is correct
7 Correct 85 ms 79100 KB Output is correct
8 Correct 33 ms 75744 KB Output is correct
9 Correct 33 ms 75604 KB Output is correct
10 Correct 83 ms 79116 KB Output is correct
11 Correct 78 ms 78976 KB Output is correct
12 Correct 79 ms 79208 KB Output is correct
13 Correct 81 ms 79180 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 75392 KB Output is correct
2 Correct 30 ms 75340 KB Output is correct
3 Correct 29 ms 75344 KB Output is correct
4 Correct 29 ms 75436 KB Output is correct
5 Correct 31 ms 75588 KB Output is correct
6 Correct 32 ms 75664 KB Output is correct
7 Correct 85 ms 79100 KB Output is correct
8 Correct 33 ms 75744 KB Output is correct
9 Correct 33 ms 75604 KB Output is correct
10 Correct 83 ms 79116 KB Output is correct
11 Correct 78 ms 78976 KB Output is correct
12 Correct 79 ms 79208 KB Output is correct
13 Correct 81 ms 79180 KB Output is correct
14 Correct 131 ms 81752 KB Output is correct
15 Correct 1133 ms 112420 KB Output is correct
16 Correct 131 ms 81724 KB Output is correct
17 Correct 1106 ms 112176 KB Output is correct
18 Correct 665 ms 112212 KB Output is correct
19 Correct 685 ms 112180 KB Output is correct
20 Correct 998 ms 112248 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 75344 KB Output is correct
2 Correct 31 ms 75504 KB Output is correct
3 Correct 107 ms 78580 KB Output is correct
4 Correct 761 ms 115164 KB Output is correct
5 Correct 768 ms 115268 KB Output is correct
6 Incorrect 1026 ms 115456 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 75368 KB Output is correct
2 Correct 29 ms 75436 KB Output is correct
3 Correct 31 ms 75380 KB Output is correct
4 Correct 30 ms 75444 KB Output is correct
5 Incorrect 30 ms 75448 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 75340 KB Output is correct
2 Correct 30 ms 75428 KB Output is correct
3 Correct 30 ms 75364 KB Output is correct
4 Incorrect 30 ms 75412 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 75424 KB Output is correct
2 Correct 29 ms 75440 KB Output is correct
3 Correct 28 ms 75388 KB Output is correct
4 Correct 30 ms 75432 KB Output is correct
5 Incorrect 36 ms 75432 KB Output isn't correct
6 Halted 0 ms 0 KB -