Submission #127014

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
127014	2019-07-08 19:26:59	Bench0310	Cave (IOI13_cave)	C++17	100 / 100	341 ms	660 KiB

cave

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#include <bits/stdc++.h>
#include "cave.h"
using namespace std;
void exploreCave(int n)
{
    vector<int> v;
    for(int i=0;i<n;i++) v.push_back(i);
    int s[n],d[n];
    for(int o=0;o<n;o++)
    {
        for(int i=0;i<n-o;i++) s[v[i]]=0;
        int t=0;
        if(tryCombination(s)==o) t=1;
        for(int i=0;i<n-o;i++) s[v[i]]=t;
        int l=0,r=n-o+1;
        while(l<r-1)
        {
            int m=(l+r)/2;
            int now=l;
            for(int i=now;i<m;i++) s[v[i]]=1-t;
            if(tryCombination(s)==o) r=m;
            else l=m;
            for(int i=now;i<m;i++) s[v[i]]=t;
        }
        d[v[l]]=o;
        s[v[l]]=t;
        v.erase(v.begin()+l);
    }
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24