Submission #56851

#	Time	Username	Problem	Language	Result	Execution time	Memory
56851		qkxwsm	Hotter Colder (IOI10_hottercolder)	C++17	81 / 100	842 ms	8316 KiB

hottercolder

#include "grader.h"
#include <bits/stdc++.h>

using namespace std;

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);
}
long long randomize(long long mod)
{
	return ((1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}

#define MP make_pair
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second

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

long long normalize(long long x, long long mod = INF)
{
	return (((x % mod) + mod) % mod);
}

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

int N;
int lst, lstres;

int go(int x)
{
	if (x == lst)
	{
		return lstres;
	}
	lst = x;
	lstres = Guess(x);
	return lstres;
}
pii merge(pii a, pii b)
{
	return MP(max(a.fi, b.fi), min(a.se, b.se));
}
int solve(int L, int R)
{
	if (L == R) return L;
	int was = lst, is = max(1, min(N, L + R - was));
	int b = go(is);
	if (b == 0)
	{
		return (is + was) / 2;
	}
	int mid = (is + was) / 2;
	pii guy;
	pii cur = MP(L, R);
	pii msg;
	if (b == 1)
	{
		if (is > was)
		{
			msg = MP(mid + 1, is);
		}
		else
		{
			if (mid + mid == L + R)
			{
				msg = MP(is, mid - 1);
			}
			msg = MP(is, mid);
		}
	}
	else
	{
		if (is > was)
		{
			if (mid + mid == L + R)
			{
				msg = MP(was, mid - 1);
			}
			else
			{
				msg = MP(was, mid);
			}
		}
		else
		{
			msg = MP(mid + 1, was);
		}
	}
	guy = merge(cur, msg);
	return solve(guy.fi, guy.se);
}
int HC(int n)
{
	N = n;
	lst = -1; lstres = -1;
	go(1);
	return solve(1, N);
	//1 means ur getting better, 0 means equal, -1 means worse
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 6 / 25