Submission #223889

#	Time	Username	Problem	Language	Result	Execution time	Memory
223889		DS007	Cave (IOI13_cave)	C++14	0 / 100	182 ms	652 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
using namespace std;

void exploreCave(int n) {
    int d_[n], s_[n];
    memset(d_, -1, sizeof(d_));

    for (int i = 0; i < n; i++) {
        int s[n];
        for (int j = 0; j < n; j++) {
            if (d_[j] == -1)
                s[j] = 0;
            else
                s[j] = s_[j];
        }

        int x = tryCombination(s);
        s_[i] = x == i;

        int l = 0, h = n - 1, ans = -1;

        while (l <= h) {
            int temp[n];
            memcpy(temp, s, n);
            int mid = (l + h) / 2;

            for (int j = l; j <= mid; j++)
                temp[j] = d_[j] == -1 ? 1 : s[j];

            int y = tryCombination(temp);
            if (x != y)
                ans = mid, h = mid - 1;
            else
                l = mid + 1;
        }

        d_[i] = ans;
    }

    answer(s_, d_);
}

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