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Submission #590283

# Submission time Handle Problem Language Result Execution time Memory
590283 2022-07-05T18:09:34 Z blue Snake Escaping (JOI18_snake_escaping) C++17
58 / 100
 2000 ms 17108 KB 
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

using vi = vector<int>;
#define sz(x) int(x.size())

int main()
{
	int L, Q;
	cin >> L >> Q;

	vi A((1<<L));
	for(int i = 0; i < (1<<L); i++)
	{
		char c;
		cin >> c;
		A[i] = c - '0';
	}

	vi lowersum = A;

	vi uppersum = A; 
	reverse(uppersum.begin(), uppersum.end());

	for(int b = 0; b < L; b++)
	{
		for(int i = 0; i < (1<<L); i++)
		{
			if(i & (1<<b))
			{
				lowersum[i] += lowersum[i ^ (1<<b)];
				uppersum[i] += uppersum[i ^ (1<<b)];
			}
		}
	}

	vi getbit((1<<L));
	for(int i = 0; i < L; i++)
		getbit[(1<<i)] = i;

	for(int j = 0; j < Q; j++)
	{
		vi p0, p1, pq;

		int onemask = 0;
		int qmask = 0;
		int zeromask = 0;

		for(int b = L-1; b >= 0; b--)
		{
			char c;
			cin >> c;

			if(c == '0')
			{
				p0.push_back(b);
				zeromask += (1<<b);
			}
			else if(c == '1')
			{
				p1.push_back(b);
				onemask += (1<<b);
			}
			else
			{
				pq.push_back(b);
				qmask += (1<<b);
			}
		}

		int res = 0;


		if(sz(p1) <= -1)
		{
			// cerr << "p1 size = " << sz(p1) << '\n';
			vi ssum((1 << sz(p1)), 0);
			vi sign((1 << sz(p1)), +1);

			if(sz(p1) % 2 == 0)
				sign[0] = +1;
			else
				sign[0] = -1;

			for(int m = 1; m < (1<<sz(p1)); m++)
			{
				ssum[m] = ssum[m - (m&-m)] + (1 << p1[getbit[m&-m]]);
				sign[m] = -1 * sign[m - (m&-m)];
			}

			for(int m = 0; m < (1<<sz(p1)); m++)
			{
				// cerr << "m = " << m << '\n';
				// cerr << "sign = " << sign[m] << '\n';
				res += lowersum[qmask | ssum[m]] * sign[m];
			}
		}
		else if(sz(p0) <= 10)
		{
			// cerr << "p0 size = " << sz(p0) << '\n';
			vi ssum((1 << sz(p0)), 0);
			vi sign((1 << sz(p0)), +1);

			if(sz(p0) % 2 == 0)
				sign[0] = +1;
			else
				sign[0] = -1;

			for(int m = 1; m < (1<<sz(p0)); m++)
			{
				ssum[m] = ssum[m - (m&-m)] + (1 << p0[getbit[m&-m]]);
				sign[m] = -1 * sign[m - (m&-m)];
			}

			// cerr << "qmask = " << qmask << '\n';

			for(int m = 0; m < (1<<sz(p0)); m++)
			{
				// cerr << m << " -> " << ssum[m] << '\n';
				res += uppersum[qmask | ssum[m]] * sign[m];
			}
		}
		else// if(sz(pq) <= 10)
		{
			vi ssum((1 << sz(pq)), 0);
			for(int m = 1; m < (1<<sz(pq)); m++)
				ssum[m] = ssum[m - (m&-m)] + (1 << pq[getbit[m&-m]]);

			for(int m = 0; m < (1<<sz(pq)); m++)
				res += A[onemask | ssum[m]];
		}

		// cerr << test << ' ' << mask << '\n';

		cout << res << '\n';
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 3 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 3 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 3 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 3 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Execution timed out 2074 ms 5048 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 3 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 3 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Execution timed out 2074 ms 5048 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 3 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 3 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Correct 264 ms 16908 KB Output is correct
12 Correct 341 ms 17016 KB Output is correct
13 Correct 517 ms 16844 KB Output is correct
14 Correct 294 ms 16844 KB Output is correct
15 Correct 239 ms 16944 KB Output is correct
16 Correct 279 ms 16936 KB Output is correct
17 Correct 298 ms 16880 KB Output is correct
18 Correct 225 ms 17108 KB Output is correct
19 Correct 493 ms 16920 KB Output is correct
20 Correct 255 ms 16940 KB Output is correct
21 Correct 248 ms 16956 KB Output is correct
22 Correct 259 ms 16876 KB Output is correct
23 Correct 251 ms 16820 KB Output is correct
24 Correct 314 ms 16984 KB Output is correct
25 Correct 290 ms 16940 KB Output is correct
26 Correct 236 ms 16808 KB Output is correct
27 Correct 530 ms 16964 KB Output is correct
28 Correct 347 ms 16836 KB Output is correct
29 Correct 260 ms 16816 KB Output is correct
30 Correct 280 ms 16888 KB Output is correct
31 Correct 272 ms 16808 KB Output is correct
32 Correct 330 ms 16940 KB Output is correct
33 Correct 300 ms 16916 KB Output is correct
34 Correct 235 ms 16824 KB Output is correct
35 Correct 302 ms 16960 KB Output is correct
36 Correct 347 ms 16936 KB Output is correct
37 Correct 291 ms 16856 KB Output is correct
38 Correct 316 ms 16956 KB Output is correct
39 Correct 321 ms 16920 KB Output is correct
40 Correct 300 ms 16824 KB Output is correct

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 3 ms 212 KB Output is correct
3 Correct 3 ms 212 KB Output is correct
4 Correct 3 ms 212 KB Output is correct
5 Correct 3 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 3 ms 212 KB Output is correct
8 Correct 3 ms 212 KB Output is correct
9 Correct 3 ms 212 KB Output is correct
10 Correct 3 ms 212 KB Output is correct
11 Execution timed out 2074 ms 5048 KB Time limit exceeded
12 Halted 0 ms 0 KB -