제출 #62754

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
62754		qkxwsm	도서관 (JOI18_library)	C++17	100 / 100	791 ms	592 KiB

library

/*
PROG: source
LANG: C++11
    _____
  .'     '.
 /  0   0  \
|     ^     |
|  \     /  |
 \  '---'  /
  '._____.'
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include "library.h"

using namespace std;
using namespace __gnu_pbds;

struct chash
{
	int operator()(int x) const
	{
		x ^= (x >> 20) ^ (x >> 12);
		return x ^ (x >> 7) ^ (x >> 4);
	}
	int operator()(long long x) const
	{
		return x ^ (x >> 32);
	}
};

template<typename T> using orderedset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using hashtable = gp_hash_table<T, U, chash>;

template<class T>
void readi(T &x)
{
	T input = 0;
	bool negative = false;
	char c = ' ';
	while (c < '-')
	{
		c = getchar();
	}
	if (c == '-')
	{
		negative = true;
		c = getchar();
	}
	while (c >= '0')
	{
		input = input * 10 + (c - '0');
		c = getchar();
	}
	if (negative)
	{
		input = -input;
	}
	x = input;
}
template<class T>
void printi(T output)
{
	if (output == 0)
	{
		putchar('0');
		return;
	}
	if (output < 0)
	{
		putchar('-');
		output = -output;
	}
	int aout[20];
	int ilen = 0;
	while(output)
	{
		aout[ilen] = ((output % 10));
		output /= 10;
		ilen++;
	}
	for (int i = ilen - 1; i >= 0; i--)
	{
		putchar(aout[i] + '0');
	}
	return;
}
template<class T>
void ckmin(T &a, T b)
{
	a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
	a = max(a, b);
}
template<class T>
T normalize(T x, T mod = 1000000007)
{
	return (((x % mod) + mod) % mod);
}
long long randomizell(long long mod)
{
	return ((1ll << 45) * rand() + (1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}
int randomize(int mod)
{
	return ((1ll << 15) * rand() + rand()) % mod;
}

#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;

const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-10;

#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll
#define MAXN 1013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;
typedef vector<int> vi;

int N;
vi quer;
vi cand;
vi ans;

int edges(int lt, int rt, int u)
{
	for (int i = 0; i < N; i++)
	{
		quer[i] = 0;
	}
	for (int i = lt; i <= rt; i++)
	{
		quer[cand[i]] = 1;
	}
	if (u != -1)
	{
		quer[u] = 1;
	}
	return (rt - lt) + (bool) (u != -1) - Query(quer);
}
bool check_edge(int x)
{
	for (int i = 0; i < N; i++)
	{
		quer[i] = 1;
	}
	quer[x] = 0;
	return (Query(quer) == 1);
}
int go(int u, int lt, int rt)
{
	if (lt == rt)
	{
		return cand[lt];
	}
	int mid = (lt + rt) / 2;
	int ledge = edges(lt, mid, u) - edges(lt, mid, -1);
	if (ledge)
	{
		rt = mid;
	}
	else
	{
		lt = mid + 1;
	}
	return go(u, lt, rt);
}

void Solve(int n)
{
	N = n;
	quer.resize(N);
	cand.resize(N);
	ans.resize(N);
	if (N == 1)
	{
		Answer(vector<int>(1, 1));
		return;
	}
	//find any guy on the edge:
	for (int i = 0; i < N; i++)
	{
		cand[i] = i;
	}
	for (int i = 0; i < N; i++)
	{
		if (check_edge(i))
		{
			ans[0] = i;
			cand.erase(find(cand.begin(), cand.end(), i));
			break;
		}
	}
	for (int i = 1; i < N; i++)
	{
		ans[i] = (go(ans[i - 1], 0, cand.size() - 1));
		cand.erase(find(cand.begin(), cand.end(), ans[i]));
	}
	for (int i = 0; i < N; i++)
	{
		ans[i]++;
	}
	if (randomize(2))
	{
		reverse(ans.begin(), ans.end());
	}
	Answer(ans);
}

• Subtask 1: 19 / 19
• Subtask 2: 81 / 81