oj.uz

답안 #590284

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
590284 2022-07-05T18:10:03 Z blue Snake Escaping (JOI18_snake_escaping) C++17
58 / 100
 2000 ms 17132 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) <= 6)
		{
			// 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) <= 6)
		{
			// 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) <= 6)
		{
			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

# 결과 실행 시간 메모리 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 2 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

# 결과 실행 시간 메모리 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 2 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 2091 ms 3788 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 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 2 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 2091 ms 3788 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
53.0 / 53.0

# 결과 실행 시간 메모리 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 2 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 258 ms 17132 KB Output is correct
12 Correct 242 ms 16916 KB Output is correct
13 Correct 254 ms 16808 KB Output is correct
14 Correct 270 ms 16856 KB Output is correct
15 Correct 247 ms 16932 KB Output is correct
16 Correct 300 ms 17016 KB Output is correct
17 Correct 254 ms 16824 KB Output is correct
18 Correct 236 ms 17052 KB Output is correct
19 Correct 253 ms 16716 KB Output is correct
20 Correct 234 ms 16964 KB Output is correct
21 Correct 262 ms 16940 KB Output is correct
22 Correct 281 ms 16832 KB Output is correct
23 Correct 240 ms 16780 KB Output is correct
24 Correct 270 ms 16812 KB Output is correct
25 Correct 259 ms 16880 KB Output is correct
26 Correct 221 ms 16952 KB Output is correct
27 Correct 245 ms 17100 KB Output is correct
28 Correct 263 ms 16812 KB Output is correct
29 Correct 250 ms 16944 KB Output is correct
30 Correct 274 ms 16920 KB Output is correct
31 Correct 241 ms 16812 KB Output is correct
32 Correct 277 ms 16952 KB Output is correct
33 Correct 262 ms 16984 KB Output is correct
34 Correct 239 ms 16824 KB Output is correct
35 Correct 261 ms 16844 KB Output is correct
36 Correct 262 ms 16820 KB Output is correct
37 Correct 255 ms 16848 KB Output is correct
38 Correct 265 ms 16904 KB Output is correct
39 Correct 277 ms 16836 KB Output is correct
40 Correct 259 ms 16904 KB Output is correct

Subtask #5
0 / 25.0

# 결과 실행 시간 메모리 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 2 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 2091 ms 3788 KB Time limit exceeded
12 Halted 0 ms 0 KB -