Submission #1313233

#	Time	Username	Problem	Language	Result	Execution time	Memory
1313233		sitingfake	Cave (IOI13_cave)	C++20	100 / 100	355 ms	488 KiB

cave

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

// define
//bool M1;
//#define execute cerr << " Time: " << fixed << setprecision(6) << (1.0 * clock() / CLOCKS_PER_SEC) << "s\n";
//#define memory cerr << abs(&M2 - &M1)/1024.0/1024 << " MB" << "\n"


#define ll long long
#define ii pair <int , int>
#define iii pair <int , ii>
#define se second
#define fi first
#define all(v) (v).begin() , (v).end()
#define Unique(v) sort(all(v)) , v.resize(unique(all(v)) - v.begin())
#define bit(x,i) (((x) >> (i)) & 1LL)
#define flip(x,i) ((x) ^ (1LL << (i)))
#define ms(d,x) memset(d , x , sizeof(d))
#define exist __exist
#define ends __ends
#define visit visited
#define left __left
#define right __right
#define prev __prev
#define next __next
#define sitingfake 1
#define orz 1

//constant

const long long mod = 1e9 + 7;
const long long linf = 4557430888798830399LL;
const long long nlinf = -4485090715960753727LL;
const int inf = 1061109567;
const int ninf = -1044266559;
const int dx[] = {0 , -1 , 0 , 1};
const int dy[] = {-1 , 0 , 1 , 0};

template<typename T> bool maximize(T &a, const T &b)
{
    if(a < b) {a = b; return 1;}
    return 0;
}

template<typename T> bool minimize(T &a, const T &b)
{
    if(a > b) {a = b; return 1;}
    return 0;
}

void Plus(ll & a ,ll b)
{
    b %= mod;
    a += b;
    if(a < 0) a += mod;
    a %= mod;
    return;
}

void Mul(ll & a, ll b)
{
    (a *= (b % mod)) %= mod;
    return;
}

//code
const int maxn = 5e3 + 7;

void exploreCave(int n)
{
    int state[n] , res[n];
    ms(state , 0);
    ms(res , -1);

    for(int door = 0; door < n; door++)
    {
        int cur = tryCombination(state);
        int left = 0 , right = n - 1 , pos = -1;

        while(left <= right)
        {
            int mid = (left + right) >> 1;

            for(int i = 0; i <= mid; i++)
            {
                if(res[i] == -1) state[i] = 1;
            }
            int d = tryCombination(state);
            if(cur > door || cur == -1)
            {
                // door I is open
                if(d <= door && d != -1)
                {
                    pos = mid;
                    right = mid - 1;
                }
                else left = mid + 1;
            }
            else
            {
                // door I is close
                if(d > door || d == -1)
                {
                    pos = mid;
                    right = mid - 1;
                }
                else left = mid + 1;
            }
            for(int i = 0; i <= mid; i++)
            {
                if(res[i] == -1) state[i] = 0;
            }
        }
        if(cur <= door && cur != -1) state[pos] = 1;
        res[pos] = door;
    }
    answer(state , res);
}
/**
**/

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