oj.uz

답안 #405373

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
405373 2021-05-16T10:15:23 Z tiberiu 식물 비교 (IOI20_plants) C++14
0 / 100
 4000 ms 300 KB 
#include "plants.h"
#include <iostream>

using namespace std;

const int MAX_N = 2e5;

int N, K;

int v[MAX_N], hGen[MAX_N];
int aint_mn[4 * MAX_N];
int aint_pos[4 * MAX_N];
int aint_lazy[4 * MAX_N];

int cval;

void propag(int n, int nl, int nr) {
    aint_mn[n * 2 + 1] += aint_lazy[n];
    aint_lazy[n * 2 + 1] += aint_lazy[n];
    aint_mn[n * 2 + 2] += aint_lazy[n];
    aint_lazy[n * 2 + 2] += aint_lazy[n];
    aint_lazy[n] = 0;
}

void init(int n = 0, int nl = 0, int nr = 0) {
    if (n == 0) nr = N - 1;

    aint_pos[n] = nl;

    if (nl < nr) {
        int mid = (nl + nr) / 2;
        init(n * 2 + 1, nl, mid);
        init(n * 2 + 2, mid + 1, nr);
    }
}

pair<int, int> query(int l, int r, int n = 0, int nl = 0, int nr = 0) {
    if (n == 0) nr = N - 1;

    if (l == nl && r == nr) {
        return {aint_mn[n], aint_pos[n]};
    }

    propag(n, nl, nr);

    pair<int, int> q1, q2;
    int mid = (nl + nr) / 2;

    if (r <= mid)
        return query(l, r, n * 2 + 1, nl, mid);
    else if (l > mid)
        return query(l, r, n * 2 + 2, mid + 1, nr);
    else {
        q1 = query(l, mid, n * 2 + 1, nl, mid);
        q2 = query(mid + 1, r, n * 2 + 2, mid + 1, nr);
        return min(q1, q2);
    }
}

void update(int l, int r, int val, int n = 0, int nl = 0, int nr = 0) {
    if (n == 0) nr = N - 1;

    if (l == nl && r == nr) {
        aint_mn[n] += val;
        aint_lazy[n] += val;
        return;
    }
//    cerr << l << ' ' << r << ' ' << nl << ' ' << nr << endl;

    propag(n, nl, nr);

    int mid = (nl + nr) / 2;

    if (l <= mid)
        update(l, min(mid, r), val, n * 2 + 1, nl, mid);
    if (r > mid)
        update(max(mid + 1, l), r, val, n * 2 + 2, mid + 1, nr);

    if (aint_mn[n * 2 + 1] < aint_mn[n * 2 + 2]) {
        aint_mn[n] = aint_mn[n * 2 + 1];
        aint_pos[n] = aint_pos[n * 2 + 1];
    } else {
        aint_mn[n] = aint_mn[n * 2 + 2];
        aint_pos[n] = aint_pos[n * 2 + 2];
    }
}

void solve(int x) {

//    cerr << x << endl;
    if (x >= K - 1) {
        pair<int, int> q = query(x - K + 1, x - 1);
        if (q.first == 0) {
            solve(q.second);
            solve(x);
            return;
        }
    } else {
        pair<int, int> q = query(N + x - K + 1, N - 1);

        if (q.first != 0 && x > 0)
            q = query(0, x - 1);
        if (q.first == 0) {
            solve(q.second);
            solve(x);
            return;
        }
    }

    hGen[x] = cval;
    cval--;

    if (x >= K - 1) {
        update(x - K + 1, x - 1, -1);
    } else {
        if (x > 0)
            update(0, x - 1, -1);
        update(N + x - K + 1, N - 1, -1);
    }
    update(x, x, +1000000);
//    for (int i = 0; i < N; i++)
//        cout << query(i, i).first << ' ';
//    cout << endl;
//    cerr << x << endl;
}

vector<int> gen(int k, vector<int> r) {
    init();

    for (int i = 0; i < N; i++) {
        update(i, i, r[i]);
    }

    cval = N;

    while (aint_mn[0] == 0) {
        solve(aint_pos[0]);
    }
//    cerr << "Gen complete!" << endl;
}

void init(int k, std::vector<int> r) {
    K = k;
    N = r.size();

    gen(k, r);

	return;
}

int compare_plants(int x, int y) {
	return (hGen[x] < hGen[y] ? -1 : 1);
}

Compilation message

plants.cpp: In function 'std::vector<int> gen(int, std::vector<int>)':
plants.cpp:140:1: warning: no return statement in function returning non-void [-Wreturn-type]
  140 | }
      | ^

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4032 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4065 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4065 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4058 ms 300 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4041 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4050 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4032 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -