Submission #884173

#	Time	Username	Problem	Language	Result	Execution time	Memory
884173		AndrijaM	Cave (IOI13_cave)	C++14	12 / 100	374 ms	596 KiB

cave

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

const int maxn = 2e5+10;

void exploreCave(int n) 
{
    int d[n];
    int s[n];
    bool vis[n];
    memset(d,-1,sizeof d);
    memset(vis,0,sizeof vis);
    memset(s,0,sizeof s);
    for(int idx=0;idx<n;idx++)
    {
        for(int i=0;i<n;i++)
        {
            if(vis[i])continue;
            s[i]=0;
        }
        int p=tryCombination(s);
        int tip=-1;
        if(p==idx)
        {
            tip=1;
        }
        else
        {
            tip=0;
        }
        int l=0;
        int r=n-1;
        while(true)
        {
            int mid=(r+l)/2;
            if(tip==1)
            {
                for(int i=0;i<n;i++)
                {
                    if(vis[i])continue;
                    s[i]=0;
                }
                for(int i=l;i<=mid;i++)
                {
                    if(vis[i])continue;
                    s[i]=1;
                }
            }
            else
            {
                for(int i=0;i<n;i++)
                {
                    if(vis[i])continue;
                    s[i]=1;
                }
                for(int i=l;i<=mid;i++)
                {
                    if(vis[i])continue;
                    s[i]=0;
                }
            }
            int poz=tryCombination(s);
            if(poz==idx)
            {
                l=mid+1;
            }
            else
            {
                r=mid;
            }
            if(l==r)break;
        }
        d[idx]=l;
        s[l]=tip;
        vis[l]=true;
    }
    answer(s,d);
}

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