Submission #1186439

#	Time	Username	Problem	Language	Result	Execution time	Memory
1186439		nikaa123	Cave (IOI13_cave)	C++20	0 / 100	151 ms	520 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
#define pb push_back

using namespace std;

const int N = 5e3+5;

int n;
int fix[N];
int ind,ans[N],p[N],cnt[N];

void exploreCave(int N) {
    
    n = N;
    int v[n];
    for (int i = 0; i < n; i++) {
        v[i] = 0;
    }
    
    for (int i = 0; i < n; i++) {   
        for (int j = 0; j < n; j++) {
            if (!fix[j]) v[j] = 0;
        } 
        int c = tryCombination(v);
        int need;
        if (c == i) {
            need = 1;
        } else {
            need = 0;
        }
        int l = 0; int r = n-1;
        while (l <= r) {
            int mid = (l+r)/2;
            for (int j = 0; j < n; j++) {
                if (fix[j]) continue;
                v[j] = 1- need; 
            }
            for (int j = l; j < mid; j++) {
                if (!fix[j]) continue;
                v[j] = need;
            }
            int nc = tryCombination(v);
            if (nc == -1 || nc > i) {
                for (int j = 0; j <= mid; j++) {
                    if (!fix[j]) {
                        ind = j;
                        break;
                    }
                }
                r = mid - 1;
            } else {
                l = mid + 1;
            }
            c = nc;
        }
        ans[i] = ind;
        fix[ind] = 1;
        p[ind] = need;
        v[ind] = need;
    }

    int S[N],D[N];
    for (int i = 0; i < n; i++) {
        S[i] = v[i];
        D[ans[i]] = i; 
    }

    answer(S,D);

}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24