oj.uz

답안 #366937

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
366937 2021-02-15T18:54:09 Z kostia244 Mecho (IOI09_mecho) C++17
8 / 100
 319 ms 7148 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2")
#include<bits/stdc++.h>
#define all(x) begin(x), end(x)
using namespace std;
const int maxn = 808, C = 1;
using ll = long long;
int n, s;
char c[maxn][maxn];
array<int, 2> st, en;
int bdi[maxn][maxn];
vector<array<int, 2>> d {{1, 0}, {-1, 0}, {0, -1}, {0, 1}};
bool good(int x, int y) {
	return !(min(x, y) < 1 || max(x, y) > n) && bdi[x][y] != 'T'; 
}
void bees() {
	memset(bdi, -1, sizeof bdi);
	queue<array<int, 2>> q;
	auto add = [&](int x, int y, int d) {
		if(bdi[x][y] >= 0) return;
		bdi[x][y] = d;
		q.push({x, y});
	};
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= n; j++)
			if(c[i][j] == 'H') add(i, j, 0);
	while(!q.empty()) {
		auto [x, y] = q.front(); q.pop();
		for(auto [dx, dy] : d) {
			int tx = x+dx, ty = y+dy;
			if(good(tx, ty)) add(tx, ty, bdi[x][y]+1);
		}
	}
}
int dist[maxn][maxn];
bool check(int ti) {
	queue<array<int, 2>> q;
	memset(dist, -1, sizeof dist);
	auto add = [&](int x, int y, int d) {
		if(dist[x][y] >= 0) return;
		if(ti + (d/s) >= bdi[x][y]) return;
		//cout << x << " " << y << " " << d << " | " << bdi[x][y] << endl;
		dist[x][y] = d;
		q.push({x, y});
	};
	add(st[0], st[1], 0);
	while(!q.empty()) {
		auto [x, y] = q.front(); q.pop();
		for(auto [dx, dy] : d) {
			int tx = x+dx, ty = y+dy;
			if(good(tx, ty)) add(tx, ty, dist[x][y]+1);
		}
	}
	return dist[en[0]][en[1]] >= 0;
}
int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> s;
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= n; j++) {
			cin >> c[i][j];
			if(c[i][j] == 'M') st = {i, j};
			if(c[i][j] == 'D') en = {i, j};
		}
	bees();
	
	int ans = 0;
	for(int i = 1<<10; i>>=1;) ans += i*check(ans+i);
	cout << ans << '\n';
}

Subtask #1
8.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5484 KB Output is correct
2 Incorrect 4 ms 5484 KB Output isn't correct
3 Correct 4 ms 5484 KB Output is correct
4 Incorrect 4 ms 5484 KB Output isn't correct
5 Correct 5 ms 5612 KB Output is correct
6 Incorrect 4 ms 5484 KB Output isn't correct
7 Incorrect 146 ms 7020 KB Output isn't correct
8 Incorrect 4 ms 5484 KB Output isn't correct
9 Incorrect 4 ms 5484 KB Output isn't correct
10 Correct 4 ms 5484 KB Output is correct
11 Correct 4 ms 5484 KB Output is correct
12 Incorrect 4 ms 5484 KB Output isn't correct
13 Correct 4 ms 5484 KB Output is correct
14 Incorrect 4 ms 5484 KB Output isn't correct
15 Incorrect 4 ms 5484 KB Output isn't correct
16 Incorrect 4 ms 5484 KB Output isn't correct
17 Incorrect 5 ms 5484 KB Output isn't correct
18 Incorrect 5 ms 5500 KB Output isn't correct
19 Incorrect 5 ms 5484 KB Output isn't correct
20 Incorrect 4 ms 5484 KB Output isn't correct
21 Incorrect 4 ms 5484 KB Output isn't correct
22 Incorrect 4 ms 5484 KB Output isn't correct
23 Incorrect 4 ms 5484 KB Output isn't correct
24 Incorrect 4 ms 5484 KB Output isn't correct
25 Incorrect 4 ms 5484 KB Output isn't correct
26 Incorrect 5 ms 5484 KB Output isn't correct
27 Incorrect 5 ms 5484 KB Output isn't correct
28 Incorrect 5 ms 5484 KB Output isn't correct
29 Incorrect 5 ms 5484 KB Output isn't correct
30 Incorrect 6 ms 5484 KB Output isn't correct
31 Incorrect 5 ms 5484 KB Output isn't correct
32 Incorrect 5 ms 5484 KB Output isn't correct
33 Incorrect 11 ms 5868 KB Output isn't correct
34 Incorrect 19 ms 5868 KB Output isn't correct
35 Incorrect 43 ms 5868 KB Output isn't correct
36 Incorrect 14 ms 5868 KB Output isn't correct
37 Incorrect 24 ms 5868 KB Output isn't correct
38 Incorrect 84 ms 6144 KB Output isn't correct
39 Incorrect 15 ms 5996 KB Output isn't correct
40 Incorrect 35 ms 5996 KB Output isn't correct
41 Incorrect 71 ms 5996 KB Output isn't correct
42 Incorrect 21 ms 6124 KB Output isn't correct
43 Incorrect 46 ms 6124 KB Output isn't correct
44 Incorrect 103 ms 6252 KB Output isn't correct
45 Incorrect 23 ms 6124 KB Output isn't correct
46 Incorrect 32 ms 6252 KB Output isn't correct
47 Incorrect 116 ms 6252 KB Output isn't correct
48 Incorrect 23 ms 6252 KB Output isn't correct
49 Incorrect 47 ms 6252 KB Output isn't correct
50 Incorrect 140 ms 6252 KB Output isn't correct
51 Incorrect 42 ms 6380 KB Output isn't correct
52 Incorrect 48 ms 6380 KB Output isn't correct
53 Incorrect 161 ms 6508 KB Output isn't correct
54 Incorrect 32 ms 6508 KB Output isn't correct
55 Incorrect 72 ms 6508 KB Output isn't correct
56 Incorrect 190 ms 6656 KB Output isn't correct
57 Incorrect 50 ms 6636 KB Output isn't correct
58 Incorrect 92 ms 6636 KB Output isn't correct
59 Incorrect 225 ms 6568 KB Output isn't correct
60 Incorrect 41 ms 6764 KB Output isn't correct
61 Incorrect 87 ms 6764 KB Output isn't correct
62 Incorrect 319 ms 6764 KB Output isn't correct
63 Incorrect 48 ms 6764 KB Output isn't correct
64 Incorrect 82 ms 6764 KB Output isn't correct
65 Incorrect 55 ms 6764 KB Output isn't correct
66 Incorrect 51 ms 6764 KB Output isn't correct
67 Incorrect 51 ms 6912 KB Output isn't correct
68 Correct 98 ms 6892 KB Output is correct
69 Incorrect 143 ms 6892 KB Output isn't correct
70 Incorrect 58 ms 6892 KB Output isn't correct
71 Incorrect 50 ms 6892 KB Output isn't correct
72 Incorrect 154 ms 6892 KB Output isn't correct
73 Incorrect 37 ms 7020 KB Output isn't correct
74 Correct 89 ms 7020 KB Output is correct
75 Incorrect 102 ms 7020 KB Output isn't correct
76 Correct 97 ms 7148 KB Output is correct
77 Incorrect 103 ms 7148 KB Output isn't correct
78 Incorrect 135 ms 7132 KB Output isn't correct
79 Incorrect 79 ms 7020 KB Output isn't correct
80 Incorrect 99 ms 7020 KB Output isn't correct
81 Incorrect 104 ms 7020 KB Output isn't correct
82 Incorrect 98 ms 6932 KB Output isn't correct
83 Incorrect 111 ms 6892 KB Output isn't correct
84 Correct 106 ms 6892 KB Output is correct
85 Incorrect 103 ms 6892 KB Output isn't correct
86 Incorrect 110 ms 6892 KB Output isn't correct
87 Incorrect 111 ms 6892 KB Output isn't correct
88 Correct 125 ms 7020 KB Output is correct
89 Incorrect 117 ms 7020 KB Output isn't correct
90 Incorrect 117 ms 6892 KB Output isn't correct
91 Incorrect 110 ms 6956 KB Output isn't correct
92 Incorrect 133 ms 6892 KB Output isn't correct