Submission #380663

#	Time	Username	Problem	Language	Result	Execution time	Memory
380663		vishesh312	Cave (IOI13_cave)	C++17	51 / 100	532 ms	492 KiB

cave

#include "cave.h"
#include "bits/stdc++.h"
using namespace std;
/*
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using ordered_set = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
*/

#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()

using ll = long long;
const int mod = 1e9+7;

void exploreCave(int n) {
    int s[n], d[n];
    vector<bool> avl(n, true);
    for (int i = 0; i < n; ++i) {
        s[i] = 0;
        d[i] = -1;
    }
    for (int i = 0; i < n; ++i) {
        int x = tryCombination(s);
        bool zero = (x > i or x == -1);
        int str = 0, en = n-1, pichen = n-1;
        while (str <= en) {
            int temp[n];
            for (int j = 0; j < n; ++j) temp[j] = (avl[j]?zero:s[j]);
            for (int j = str; j <= en; ++j) {
                if (avl[j]) {
                    temp[j] = !zero;
                }
            }
            x = tryCombination(temp);
            if (x > i or x == -1) {
                if (str == en) {
                    d[str] = i;
                    s[str] = !zero;
                    avl[str] = false;
                    break;
                } else {
                    int dif = en - str;
                    pichen = en;
                    en = str + dif / 2;
                }
            } else {
                str = en + 1;
                en = pichen;
                int dif = en - str;
                en = str + dif / 2;
            }
        }
    }
    answer(s, d);
}

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