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Submission #392219

# Submission time Handle Problem Language Result Execution time Memory
392219 2021-04-20T16:23:29 Z johutha Packing Biscuits (IOI20_biscuits) C++17
12 / 100
 6 ms 332 KB 
#include "biscuits.h"
#include <iostream>

#define int long long

using namespace std;

int count_tastiness(int x, vector<int> a)
{
	vector<int> dpref(63);
	vector<int> vpref(63);
	vector<int> dp(62);
	a.resize(64);

	int v = 0;
	int pw = 1;

	int m = 60;

	for (int i = 0; i < m; i++, pw *= 2)
	{
		v += a[i]*pw;
		vpref[i] = v;

		int b = v - pw*x;
		int np = pw / 2;
		// cerr << "Starting " << i << ": " << v << " " << b << "\n";

		for (int j = i - 1; j >= 0; j--, np /= 2)
		{
			b = min(b, vpref[j]);
			if (b >= np*x && vpref[j] >= np * x)
			{
				// cerr << "    -> Take " << j << " (add " << 1 + dpref[j] << ") " << "\n";
				b -= np*x;
				dp[i] += 1 + dpref[j];
			}
		}
		if (b >= 0) dp[i]++;

		dpref[i + 1] = dpref[i] + dp[i];
		// cerr << i << " " << dp[i] << " " << dpref[i] << "\n";
	}

	return dpref[m] + 1;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Incorrect 1 ms 204 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 332 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Incorrect 1 ms 204 KB Output isn't correct
3 Halted 0 ms 0 KB -