Submission #995933

#	Time	Username	Problem	Language	Result	Execution time	Memory
995933		daffuwu	Cave (IOI13_cave)	C++14	34 / 100	15 ms	576 KiB

cave

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

int s[5069], d[5069], invd[5069], cur, cnt, cur1, ncur;

int conv(int x)
{
    if (x == -1) return 5001;
    return x;
}

void exploreCave(int n) 
{
    int i, j;
    //mulai dari 000000
    //d[i] --> switch i door apa
    //invd[i] --> door i switch apa
    for (i=0; i<=n-1; i++) s[i] = 0;
    for (i=0; i<=n-1; i++) d[i] = -1;
    ncur = conv(tryCombination(s));
    for (cnt=0; cnt<n;)
    {
        cur = ncur;
        // printf("cur = %d\n", cur);
        j = -1;
        for (i=0; i<=n-1; i++)
        {
            if (d[i] == -1)
            {
                s[i] ^= 1;
                cur1 = conv(tryCombination(s));
                // printf("s[%d] = %d cur1 = %d\n", i, s[i], cur1);
                if (cur1<cur)
                {
                    d[i] = cur1;
                    cnt++;
                } else if (cur1>cur)
                {
                    j = i;
                    d[i] = cur;
                    ncur = cur1;
                    cnt++;
                    // printf("j = %d\n", j);
                }
                s[i] ^= 1;
            }
        }
        if (j != -1) s[j] ^= 1;
    }
    answer(s, d);
}

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