Submission #715839

#	Time	Username	Problem	Language	Result	Execution time	Memory
715839		ovidiush11	Cave (IOI13_cave)	C++14	0 / 100	103 ms	340 KiB

cave

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

using namespace std;

void exploreCave(int N)
{
    int st[N]={0},direction[N]={0},pos[N]={0};
    int last = tryCombination(direction);
    for(int i = 0;i < N-1;i++)
    {
        int left = 0,right = N-1;
        while(left != right)
        {
            int mid = (left + right) / 2;
            for(int j = left;j < mid;j++)if(st[i] == 0)direction[i] = (direction[i] + 1) % 2;
            int x = tryCombination(direction);
            if((x > i && last > i) || (x <= i && last <= i))left = mid+1;
            else right = mid;
            last = x;
        }
        if(last <= i)direction[left] = (direction[left] + 1) % 2;
        st[left] = 1;
        pos[i] = left;
    }
    answer(direction,pos);
}

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