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Submission #706335

# Submission time Handle Problem Language Result Execution time Memory
706335 2023-03-06T09:39:49 Z SamNguyen Hotter Colder (IOI10_hottercolder) C++14
50 / 100
 722 ms 8112 KB 
#include "grader.h"
#include <bits/stdc++.h>
using namespace std;

const int HOTTER = 1, COLDER = -1, SAME = 0;

template <class Func>
int FIND_SMALLEST(int l, int r, Func f) {
	int res = r + 1;
	while (l <= r) {
		int m = (l + r) >> 1;
		if (f(m)) res = m, r = m - 1;
		else l = m + 1;
	}
	return res;
}

template <class Func>
int FIND_LARGEST(int l, int r, Func f) {
	int res = l - 1;
	while (l <= r) {
		int m = (l + r) >> 1;
		if (f(m)) res = m, l = m + 1;
		else r = m - 1;
	}
	return res;
}

mt19937 rnd(time(NULL));

int solve(int l, int r, int old = 0) {
	if (l == r)
		return r;

	/*
	if (old != 0)
		cout << "solve " << l << " " << r << ", old = " << old << endl;
	*/

	if (old == l) {
		int id = Guess(r);
		int m = (l + r) >> 1;
		if (id == SAME)
			return m;
		if (id == HOTTER)
			return solve(m + 1, r, r);
		return solve(l, m, 0);
	}

	if (old == r) {
		int id = Guess(l);
		int m = (l + r + 1) >> 1;
		if (id == SAME)
			return m;
		if (id == HOTTER)
			return solve(l, m - 1, l);
		return solve(m, r, 0);
	}

	int x = (rnd() & 1) ? l : r;
	Guess(x);
	return solve(l, r, x);
}

int HC(int N) {
	return solve(1, N);
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 1236 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 1284 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 1308 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 722 ms 8112 KB Output isn't correct - alpha = 0.000000000000