답안 #832862

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
832862	2023-08-21T16:04:32 Z	serifefedartar	Nautilus (BOI19_nautilus)	C++17	66 / 100	1000 ms	6748 KB

nautilus

#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(0);cin.tie(0);
typedef long long ll;
#define f first
#define s second
#define MOD 1000000007
#define LOGN 20
#define MAXN 300005
#pragma GCC optimize("Ofast")

vector<vector<bool>> in_set;
vector<string> grid;
int main() {
	fast
	int R, C, M;
	cin >> R >> C >> M;

	grid = vector<string>(R);
	in_set = vector<vector<bool>>(R, vector<bool>(C, false));
	for (int i = 0; i < R; i++)
		cin >> grid[i];
	string way;
	cin >> way;

	vector<pair<int,int>> curr;
	for (int i = 0; i < R; i++) {
		for (int j = 0; j < C; j++) {
			if (grid[i][j] == '.')
				curr.push_back({i, j});
		}
	}

	vector<pair<int,int>> new_curr;
	for (int i = 0; i < M; i++) {
		new_curr = vector<pair<int,int>>();
		for (auto u : curr)
			in_set[u.f][u.s] = false;

		if (way[i] == 'W') {
			for (auto u : curr) {
				if (u.s && grid[u.f][u.s-1] == '.' && !in_set[u.f][u.s-1]) {
					new_curr.push_back({u.f, u.s-1});
					in_set[u.f][u.s-1] = true;
				}
			}
		} else if (way[i] == 'E') {
			for (auto u : curr) {
				if (u.s != C-1 && grid[u.f][u.s+1] == '.' && !in_set[u.f][u.s+1]) {
					new_curr.push_back({u.f, u.s+1});
					in_set[u.f][u.s+1] = true;
				}
			}
		} else if (way[i] == 'N') {
			for (auto u : curr) {
				if (u.f && grid[u.f-1][u.s] == '.' && !in_set[u.f-1][u.s]) {
					new_curr.push_back({u.f-1, u.s});
					in_set[u.f-1][u.s] = true;
				}
			}
		} else if (way[i] == 'S') {
			for (auto u : curr) {
				if (u.f != R-1 && grid[u.f+1][u.s] == '.' && !in_set[u.f+1][u.s]) {
					new_curr.push_back({u.f+1, u.s});
					in_set[u.f+1][u.s] = true;
				}
			}
		} else {
			for (auto u : curr) {
				if (u.s && grid[u.f][u.s-1] == '.' && !in_set[u.f][u.s-1]) {
					new_curr.push_back({u.f, u.s-1});
					in_set[u.f][u.s-1] = true;
				}
				if (u.s != C-1 && grid[u.f][u.s+1] == '.' && !in_set[u.f][u.s+1]) {
					new_curr.push_back({u.f, u.s+1});
					in_set[u.f][u.s+1] = true;
				}
				if (u.f && grid[u.f-1][u.s] == '.' && !in_set[u.f-1][u.s]) {
					new_curr.push_back({u.f-1, u.s});
					in_set[u.f-1][u.s] = true;
				}
				if (u.f != R-1 && grid[u.f+1][u.s] == '.' && !in_set[u.f+1][u.s]) {
					new_curr.push_back({u.f+1, u.s});
					in_set[u.f+1][u.s] = true;
				}
			}
		}
		swap(curr, new_curr);
	}

	cout << curr.size() << "\n";
}

Subtask #1

29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	644 KB	Output is correct
2	Correct	1 ms	452 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct

Subtask #2

37.0 / 37.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	644 KB	Output is correct
2	Correct	1 ms	452 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	8 ms	632 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	10 ms	644 KB	Output is correct
13	Correct	13 ms	468 KB	Output is correct
14	Correct	12 ms	556 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	11 ms	644 KB	Output is correct
18	Correct	16 ms	468 KB	Output is correct
19	Correct	9 ms	332 KB	Output is correct
20	Correct	2 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct

Subtask #3

0 / 34.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	644 KB	Output is correct
2	Correct	1 ms	452 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	8 ms	632 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	10 ms	644 KB	Output is correct
13	Correct	13 ms	468 KB	Output is correct
14	Correct	12 ms	556 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	11 ms	644 KB	Output is correct
18	Correct	16 ms	468 KB	Output is correct
19	Correct	9 ms	332 KB	Output is correct
20	Correct	2 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Execution timed out	1065 ms	6748 KB	Time limit exceeded
23	Halted	0 ms	0 KB	-