Submission #1359356

#	Time	Username	Problem	Language	Result	Execution time	Memory
1359356		cansu_mutlu	Cave (IOI13_cave)	C++20	13 / 100	10 ms	560 KiB

cave

#include "cave.h"
#include<bits/stdc++.h>
using namespace std;
void exploreCave(int n) {
    int a[n];
    vector<int> v;
    for(int i=0;i<n;i++)
    {
         a[i]=0;
    }
    
    int ex = tryCombination(a);
    for(int i=0;i<n;i++)
    {
        a[i] = 1-a[i];
        int num = tryCombination(a);
        if(num>=ex || num==-1) 
        v.push_back(i);
        a[i] = 1-a[i];
    }
    while(ex!=-1)
    {
            int l = 0,r = v.size()-1;
            while(l<=r)
            {
                int mid = (l+r)/2;
               for(int i=l;i<=mid;i++) a[v[i]] = 1-a[v[i]];
                int num = tryCombination(a);
                if(num>ex || num==-1)
                {
                    r = mid-1;
                    if(l>r)
                    {
                        ex = num;
                        break;
                    }
                }
                else l = mid+1;
                for(int i=l;i<=mid;i++) a[v[i]] = 1-a[v[i]];
            }
            vector<int> b;
            for(int i:v)
            {
                if(i!=l)b.push_back(i);
            }
            swap(b,v);
    }
    int b[n];
    for(int i=0;i<n;i++)
    {
        a[i] = 1-a[i];
        int num = tryCombination(a);
        a[i] = 1-a[i];
        b[i] = num;
    }
    answer(a,b);
    return;
}

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