Submission #571996

#	Time	Username	Problem	Language	Result	Execution time	Memory
571996		Vanilla	Cave (IOI13_cave)	C++17	0 / 100	77 ms	480 KiB

cave

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

void exploreCave(int n) {
    int s[n], dr[n];
    if (n == 1) {
        s[0] = dr[0] = 0;
        if (tryCombination(s) != -1) {
            s[0] = 1;
        }
        answer(s, dr);
        return;
    }
    for (int i = 0; i < n; i++){
        s[i] = 0, dr[i] = -1;
    }
    for (int door = 0; door < n; door++){
        for (int i = 0; i < n; i++){
            if (dr[i] == -1) {
                s[i] = 0;
            }
        }
        int l = 0, r = n-1, state = 1, k = tryCombination(s);
        int rs = 0;
        while (l <= r) {
            for (int i = l; i <= r; i++){
                if (dr[i] == -1) s[i] = 0;
            }
            int mid = (l + r) / 2;
            for (int i = l; i <= mid; i++){
                if (dr[i] == -1) dr[i] = 1;
            }
            k = tryCombination(s);
 
            if(k == door) {
                r = mid - 1;
                rs = mid;
                state = !state;
            }else {
                l = mid + 1;
            }

        }
        dr[rs] = door;
        s[rs] = state;
    }
    answer(s, dr);
}

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