oj.uz

Submission #1005292

# Submission time Handle Problem Language Result Execution time Memory
1005292 2024-06-22T09:54:55 Z j_vdd16 Worm Worries (BOI18_worm) C++17
77 / 100
 1020 ms 10092 KB 
#include <algorithm>
#include <array>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

//#define int long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;

typedef uint64_t u64;
typedef int64_t i64;

int a, b, c, q;
void answer(int x, int y, int z)
{
	cout << "! " << x << ' ' << y << ' ' << z << endl;
}

map<tuple<int, int, int>, int> results;
inline int ask(int x, int y, int z)
{
	if (x <= 0 || x > a || y <= 0 || y > b || z <= 0 || z > c)
		return 1;

	if (results.count({ x, y, z }))
		return results[{x, y, z}];

	q--;
	if (q < 0)
	{
		answer(-2, -2, -2);
		exit(0);
	}

	cout << "? " << x << ' ' << y << ' ' << z << endl;

	int res = x + y * z;
	cin >> res;
	results[{x, y, z}] = res;

	if (res == -1)
	{
		//answer(-3, -3, -3);
		exit(0);
	}

	return res;
}
void solveGreedy()
{
	int x = 1, y = 1, z = 1;
	while (true)
	{
		int val = ask(x, y, z);

		if (ask(x + 1, y, z) > val)
			x++;
		else if (ask(x - 1, y, z) > val)
			x--;
		else if (ask(x, y + 1, z) > val)
			y++;
		else if (ask(x, y - 1, z) > val)
			y--;
		else if (ask(x, y, z + 1) > val)
			z++;
		else if (ask(x, y, z - 1) > val)
			z--;
		else
			break;
	}

	answer(x, y, z);
}


inline int ask(const array<int, 3>& pos, const array<int, 3>& perm)
{
	return ask(pos[perm[0]], pos[perm[1]], pos[perm[2]]);
}

array<int, 3> solve(ii bx, ii by, ii bz, int maxX, int maxY, int maxZ, array<int, 3> perm)
{
	while (true)
	{
		int dx = bx.second - bx.first;
		int dy = by.second - by.first;
		int dz = bz.second - bz.first;
		if (dx <= 2 && dy <= 2 && dz <= 2)
		{
			array<int, 3> res = { maxX, maxY, maxZ };
			return { res[perm[0]], res[perm[1]], res[perm[2]] };
		}

		if (dy >= dx && dy >= dz)
		{
			swap(dx, dy);
			swap(bx, by);
			swap(maxX, maxY);

			if (perm[0] == 2)
				swap(perm[1], perm[2]);
			else if (perm[1] == 2)
				swap(perm[0], perm[2]);
			else
				swap(perm[0], perm[1]);
		}
		else if (dz >= dx && dz >= dy)
		{
			swap(dx, dz);
			swap(bx, bz);
			swap(maxX, maxZ);

			if (perm[0] == 1)
				swap(perm[1], perm[2]);
			else if (perm[1] == 1)
				swap(perm[0], perm[2]);
			else
				swap(perm[0], perm[1]);
		}

		int maxVal = ask({ maxX, maxY, maxZ }, perm);
		int x = bx.first + dx / 2;
		for (int y = by.first + 1; y < by.second; y++)
		{
			for (int z = bz.first + 1; z < bz.second; z++)
			{
				int val = ask({ x, y, z }, perm);
				if (val > maxVal)
				{
					maxVal = val;
					maxX = x;
					maxY = y;
					maxZ = z;
				}
			}
		}

		if (maxX != x)
		{
			if (maxX < x)
				bx.second = x;
			else
				bx.first = x;
		}
		else
		{
			int val1 = ask({ maxX - 1, maxY, maxZ }, perm);
			int val2 = ask({ maxX + 1, maxY, maxZ }, perm);
			if (maxVal >= val1 && maxVal >= val2)
			{
				array<int, 3> res = { maxX, maxY, maxZ };
				return { res[perm[0]], res[perm[1]], res[perm[2]] };
			}
			else if (val1 > maxVal)
			{
				bx.second = x;
				maxX -= 1;
			}
			else// if (val2 > maxVal)
			{
				bx.first = x;
				maxX += 1;
			}
		}
	}
}

signed main()
{
	//ios::sync_with_stdio(0);
	//cin.tie(0);

	cin >> a >> b >> c >> q;
	if (a == -1 || b == -1 || c == -1 || q == -1)
	{
		answer(-2, -2, -2);
		//exit(0);
	}

	if (a == 1 && b == 1 && c == 1)
	{
		answer(1, 1, 1);
	}
	else if (b == 1 && c == 1)
	{
		//f * f = (1 - f)
		//f^2 + f - 1 = 0
		//f = (-1 + sqrt(5)) / 2
		double f = (-1.0 + sqrt(5.0)) / 2.0;

		int l = 0, r = a + 1;
		int pos1 = -1, pos2 = -1;

		pos1 = l + (int)round(double(r - l) * (1 - f));
		pos2 = l + (int)round(double(r - l) * f);
		while (true)
		{
			if (r == l)
			{
				answer(l, 1, 1);
				break;
			}
			else if (r - l == 1)
			{
				if (ask(l, 1, 1) > ask(r, 1, 1))
					answer(l, 1, 1);
				else
					answer(r, 1, 1);

				break;
			}

			if (pos1 == -1)
				pos1 = l + (int)round(double(pos2 - l) * f);
			else if (pos2 == -1)
				pos2 = pos1 + (int)round(double(r - pos1) * (1 - f));

			int val1 = ask(pos1, 1, 1);
			int val2 = ask(pos2, 1, 1);

			if (val1 > val2)
			{
				r = pos2;
				pos2 = pos1;
				pos1 = -1;
			}
			else
			{
				l = pos1;
				pos1 = pos2;
				pos2 = -1;
			}
		}
	}
	else if (a == 1 || b == 1 || c == 1 || (a <= 100 && b <= 100 && c <= 100))
	{
		auto [x, y, z] = solve({ 0, a + 1 }, { 0, b + 1 }, { 0, c + 1 }, 1, 1, 1, { 0, 1, 2 });
		answer(x, y, z);
	}
	else
	{
		solveGreedy();
	}

	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 3 ms 456 KB Output is correct
4 Correct 4 ms 600 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 600 KB Output is correct
2 Correct 15 ms 600 KB Output is correct
3 Correct 18 ms 452 KB Output is correct
4 Correct 16 ms 660 KB Output is correct
5 Correct 22 ms 736 KB Output is correct
6 Correct 13 ms 344 KB Output is correct
7 Correct 14 ms 600 KB Output is correct
8 Correct 15 ms 760 KB Output is correct
9 Correct 17 ms 600 KB Output is correct
10 Correct 17 ms 624 KB Output is correct
11 Correct 13 ms 796 KB Output is correct
12 Correct 19 ms 600 KB Output is correct
13 Correct 16 ms 592 KB Output is correct
14 Correct 15 ms 600 KB Output is correct
15 Correct 14 ms 592 KB Output is correct
16 Correct 16 ms 592 KB Output is correct
17 Correct 20 ms 592 KB Output is correct
18 Correct 15 ms 744 KB Output is correct
19 Correct 18 ms 600 KB Output is correct
20 Correct 14 ms 344 KB Output is correct
21 Correct 18 ms 560 KB Output is correct
22 Correct 21 ms 552 KB Output is correct
23 Correct 15 ms 600 KB Output is correct
24 Correct 20 ms 700 KB Output is correct
25 Correct 15 ms 644 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 1784 KB Output is correct
2 Correct 146 ms 1692 KB Output is correct
3 Correct 148 ms 1676 KB Output is correct
4 Correct 157 ms 1824 KB Output is correct
5 Correct 151 ms 1856 KB Output is correct
6 Correct 152 ms 1644 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Incorrect 1020 ms 10092 KB invalid format (not a digit). input: ! -2 -2 -2
5 Halted 0 ms 0 KB -