제출 #600872

#제출 시각아이디문제언어결과실행 시간메모리
600872PiejanVDC식물 비교 (IOI20_plants)C++17
0 / 100
2 ms1888 KiB
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

vector<int>l(200005),h(200005), R;
int N;

void init(int k, vector<int>r) {
    R = r;
    N = r.size();
    for(int i = 1 ; i < N ; i++) {
        if(r[i-1]) {
            h[i] = h[i-1];
            l[i] = i;
        } else {
            h[i] = i;
            l[i] = l[i-1];
        }
    }
}

int compare_plants(int x, int y) {
    if(h[y] == h[x])
        return -1;
    if(l[y] == l[x])
        return 1;
    if(h[N-1] == h[y] && h[x] == h[0] && R[N-1])
        return 1;
    if(l[N-1] == l[y] && l[x] == l[0])
        return -1;
    return 0;
}
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