제출 #302046

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
302046		VEGAnn	식물 비교 (IOI20_plants)	C++14	14 / 100	4045 ms	5240 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
#define PB push_back
#define sz(x) ((int)x.size())
using namespace std;
const int N = 200100;
const int oo = 2e9;
vector<int> vc;
int per[N];

void init(int k, vector<int> r) {
    int n = sz(r);

    assert(2 * k > n);

    for (int it = n - 1; it >= 0; it--){
        vc.clear();

        for (int i = 0; i < n; i++)
            if (r[i] == 0)
                vc.PB(i);

//        for (int i = 0; i < n; i++)
//            cerr << r[i] << " ";
//        cerr << '\n';

        assert(sz(vc) > 0);

        int cand = -1;

        for (int it = 0; it < sz(vc); it++){
            int cur = vc[it];
            int pre = vc[(it + sz(vc) - 1) % sz(vc)];

            if (pre < cur){
                if (pre - cur + n < k){
                    cand = cur;
                    break;
                }
            } else {
                if (pre - cur < k){
                    cand = cur;
                    break;
                }
            }
        }

        per[cand] = it;
        r[cand] = oo;

        for (int i = 1, loc = cand; i < k; i++){
            loc = (loc + n - 1) % n;

            r[loc]--;
        }
    }

    return;
}

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

• Subtask 1: 0 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25