oj.uz

Submission #590126

# Submission time Handle Problem Language Result Execution time Memory
590126 2022-07-05T14:38:16 Z dutinmeow Sandwich (JOI16_sandwich) C++17
100 / 100
 1987 ms 2644 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma region y_combinator

#ifndef Y_COMBINATOR_HPP
#define Y_COMBINATOR_HPP

template<class Fun>
class y_combinator_result {
	Fun fun_;
public:
	template<class T>
	explicit y_combinator_result(T &&fun) : fun_(std::forward<T>(fun)) {}

	template<class ...Args>
	decltype(auto) operator()(Args &&...args) {
		return fun_(std::ref(*this), std::forward<Args>(args)...);
	}
};

template<class Fun>
decltype(auto) y_combinator(Fun &&fun) {
	return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun));
}

#endif

#pragma endregion y_combinator

const int INF = 1e9;
const array<int, 4> dx = {1, 0, -1, 0}, dy = {0, 1, 0, -1};

int main() {
	int N, M;
	cin >> N >> M;
	vector<vector<char>> A(N + 2, vector<char>(M + 2));
	for (int i = 1; i <= N; i++)
		for (int j = 1; j <= M; j++)
			cin >> A[i][j];

	int time = 0;
	vector<vector<bool>> vis(N + 2, vector<bool>(M + 2, false)), inq(N + 2, vector<bool>(M + 2, false));

	auto dfs = y_combinator([&](auto dfs, int x, int y, int t) -> void {
		if (time >= INF || inq[x][y]) 
			return void(time = INF);
		if (x <= 0 || x > N || y <= 0 || y > M || vis[x][y])
			return;
		vis[x][y] = inq[x][y] = true;
		time++;
		dfs(x + dx[t], y + dy[t], t);
		if (A[x][y] == 'Z') {
			int s = (t ^ 1);
			dfs(x + dx[s], y + dy[s], s);
		} else {
			int s = (t ^ 1 ^ 2);
			dfs(x + dx[s], y + dy[s], s);
		}
		inq[x][y] = false;
	});
	
	vector<vector<int>> ans(N + 2, vector<int>(M + 2, INF));
	for (int t : {1, 3}) {
		for (int i = N; i >= 1; i--) {
			for (int j = 1; j <= N; j++) {
				fill(vis[j].begin(), vis[j].end(), false);
				fill(inq[j].begin(), inq[j].end(), false);
			}
			time = 0;
			if (t == 3) {
				for (int j = 1; j <= M; j++) {
					dfs(i, j, t);
					ans[i][j] = min(ans[i][j], time);
				}
			} else {
				for (int j = M; j >= 1; j--) {
					dfs(i, j, t);
					ans[i][j] = min(ans[i][j], time);
				}
			}
		}
	}
	for (int i = 1; i <= N; i++) 
		for (int j = 1; j <= M; j++) 
			cout << (ans[i][j] >= INF ? -1 : ans[i][j] * 2) << " \n"[j == M];
}

Compilation message

sandwich.cpp:4: warning: ignoring '#pragma region y_combinator' [-Wunknown-pragmas]
    4 | #pragma region y_combinator
      | 
sandwich.cpp:29: warning: ignoring '#pragma endregion y_combinator' [-Wunknown-pragmas]
   29 | #pragma endregion y_combinator
      |

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 232 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 300 KB Output is correct
7 Correct 6 ms 340 KB Output is correct
8 Correct 7 ms 340 KB Output is correct
9 Correct 4 ms 308 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 6 ms 344 KB Output is correct
12 Correct 2 ms 212 KB Output is correct
13 Correct 7 ms 340 KB Output is correct
14 Correct 4 ms 340 KB Output is correct
15 Correct 4 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 3 ms 304 KB Output is correct
18 Correct 3 ms 340 KB Output is correct
19 Correct 3 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 5 ms 212 KB Output is correct
22 Correct 3 ms 300 KB Output is correct
23 Correct 4 ms 340 KB Output is correct
24 Correct 6 ms 304 KB Output is correct
25 Correct 5 ms 340 KB Output is correct
26 Correct 5 ms 340 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 4 ms 340 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 232 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 300 KB Output is correct
7 Correct 6 ms 340 KB Output is correct
8 Correct 7 ms 340 KB Output is correct
9 Correct 4 ms 308 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 6 ms 344 KB Output is correct
12 Correct 2 ms 212 KB Output is correct
13 Correct 7 ms 340 KB Output is correct
14 Correct 4 ms 340 KB Output is correct
15 Correct 4 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 3 ms 304 KB Output is correct
18 Correct 3 ms 340 KB Output is correct
19 Correct 3 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 5 ms 212 KB Output is correct
22 Correct 3 ms 300 KB Output is correct
23 Correct 4 ms 340 KB Output is correct
24 Correct 6 ms 304 KB Output is correct
25 Correct 5 ms 340 KB Output is correct
26 Correct 5 ms 340 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 4 ms 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 7 ms 340 KB Output is correct
31 Correct 66 ms 1964 KB Output is correct
32 Correct 76 ms 1996 KB Output is correct
33 Correct 27 ms 820 KB Output is correct
34 Correct 1581 ms 2272 KB Output is correct
35 Correct 1222 ms 1784 KB Output is correct
36 Correct 39 ms 448 KB Output is correct
37 Correct 1719 ms 2320 KB Output is correct
38 Correct 1543 ms 2292 KB Output is correct
39 Correct 1765 ms 2164 KB Output is correct
40 Correct 1987 ms 2512 KB Output is correct
41 Correct 685 ms 1700 KB Output is correct
42 Correct 1882 ms 2544 KB Output is correct
43 Correct 1975 ms 2536 KB Output is correct
44 Correct 1867 ms 2540 KB Output is correct
45 Correct 1449 ms 2264 KB Output is correct
46 Correct 958 ms 2268 KB Output is correct
47 Correct 1320 ms 2300 KB Output is correct
48 Correct 715 ms 1808 KB Output is correct
49 Correct 1050 ms 2268 KB Output is correct
50 Correct 1145 ms 2280 KB Output is correct
51 Correct 946 ms 2268 KB Output is correct
52 Correct 924 ms 2280 KB Output is correct
53 Correct 920 ms 2380 KB Output is correct
54 Correct 882 ms 2124 KB Output is correct
55 Correct 923 ms 2272 KB Output is correct
56 Correct 917 ms 2272 KB Output is correct
57 Correct 736 ms 1840 KB Output is correct
58 Correct 1809 ms 2532 KB Output is correct
59 Correct 1857 ms 2644 KB Output is correct
60 Correct 1293 ms 2028 KB Output is correct
61 Correct 1791 ms 2532 KB Output is correct
62 Correct 1319 ms 2340 KB Output is correct
63 Correct 1307 ms 2548 KB Output is correct