oj.uz

답안 #958015

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
958015 2024-04-04T16:27:28 Z theehann Mecho (IOI09_mecho) C++17
4 / 100
 136 ms 31572 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll
#define ft first
#define se second
#define NAME "A"
#define file freopen(NAME".INP","r",stdin); freopen(NAME".OUT","w",stdout);
#define sdf ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int MOD = 1e9 + 7;
const int N = 800 + 5, INF = 1e15;
int dx[4] = {0, 0, -1, 1};
int dy[4] = {-1, 1, 0, 0};
char a[N][N];
int dis[N][N];
bool f = false, vis[N][N] = {false};
int n, step, homex, homey, mx, my;

bool dfs(int len, int x, int y){
	vis[x][y] = true;
	int dist = (len + 1) / step;
	for(int i = 0;i < 4;++i){
		int u = dx[i] + x;
		int v = dy[i] + y;

		if(u == homex && v == homey){
			return true;
		}

		if(u < 1 || v < 1 || u > n || v > n) continue;
		if((a[u][v] == 'G') && !vis[u][v] && ((len + 1 % step == 0) ? (dist < dis[u][v]) : (dist <= dis[u][v]))){
			if(dfs(len + 1, u, v)){
				return true;
			}
		}
	}
	return false;
}

int32_t main(){
	sdf

	cin >> n >> step;
	queue<pair<int, int>> q;
	for(int i = 1;i <= n;++i){
		for(int j = 1;j <= n;++j){
			cin >> a[i][j];
			dis[i][j] = INF;
			if(a[i][j] == 'H'){
				q.push({i, j});
				dis[i][j] = 0;
			}
			else if(a[i][j] == 'D'){
				homex = i; homey = j;
			}
			else if(a[i][j] == 'M'){
				mx = i; my = j;
			}
		}
	}

	while(!q.empty()){
		const auto [x, y] = q.front(); q.pop();

		for(int i  = 0;i < 4;++i){
			int u = x + dx[i];
			int v = y + dy[i];
			if(u < 1 || v < 1 || u > n || v > n) continue;
			if(dis[u][v] == INF && a[u][v] == 'G'){
				dis[u][v] = dis[x][y] + 1;
				q.push({u, v});
			}
		}
	}

	int l = 1, r = INF;
	int ans =0;
	while(l <= r){
		int mid = (l + r) / 2;
		memset(vis, false, sizeof(vis));
		if(dfs(mid * step, mx, my)){
			l = mid + 1;
			ans = mid;
		}
		else{
			r = mid - 1;
		}
	}
	cout << ((ans >= 1) ? ans : -1) ;
	return 0;
}

Subtask #1
4.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 4696 KB Output isn't correct
2 Incorrect 1 ms 4700 KB Output isn't correct
3 Incorrect 1 ms 4700 KB Output isn't correct
4 Incorrect 1 ms 4700 KB Output isn't correct
5 Incorrect 1 ms 4700 KB Output isn't correct
6 Incorrect 1 ms 4700 KB Output isn't correct
7 Incorrect 25 ms 8284 KB Output isn't correct
8 Correct 1 ms 4700 KB Output is correct
9 Incorrect 1 ms 4736 KB Output isn't correct
10 Incorrect 1 ms 4700 KB Output isn't correct
11 Incorrect 1 ms 4700 KB Output isn't correct
12 Incorrect 2 ms 4700 KB Output isn't correct
13 Incorrect 1 ms 4564 KB Output isn't correct
14 Correct 4 ms 4700 KB Output is correct
15 Incorrect 1 ms 4736 KB Output isn't correct
16 Incorrect 1 ms 4700 KB Output isn't correct
17 Incorrect 1 ms 4696 KB Output isn't correct
18 Incorrect 1 ms 4700 KB Output isn't correct
19 Incorrect 1 ms 4700 KB Output isn't correct
20 Incorrect 2 ms 4700 KB Output isn't correct
21 Incorrect 2 ms 4700 KB Output isn't correct
22 Incorrect 1 ms 4700 KB Output isn't correct
23 Incorrect 1 ms 4696 KB Output isn't correct
24 Incorrect 1 ms 4700 KB Output isn't correct
25 Incorrect 2 ms 4700 KB Output isn't correct
26 Incorrect 1 ms 4700 KB Output isn't correct
27 Incorrect 1 ms 4700 KB Output isn't correct
28 Incorrect 1 ms 4700 KB Output isn't correct
29 Incorrect 1 ms 4700 KB Output isn't correct
30 Incorrect 2 ms 4700 KB Output isn't correct
31 Incorrect 3 ms 4700 KB Output isn't correct
32 Incorrect 2 ms 4700 KB Output isn't correct
33 Incorrect 4 ms 6748 KB Output isn't correct
34 Incorrect 4 ms 6748 KB Output isn't correct
35 Correct 17 ms 11356 KB Output is correct
36 Incorrect 4 ms 6748 KB Output isn't correct
37 Incorrect 5 ms 6748 KB Output isn't correct
38 Correct 27 ms 12800 KB Output is correct
39 Incorrect 5 ms 6748 KB Output isn't correct
40 Incorrect 5 ms 6748 KB Output isn't correct
41 Correct 32 ms 14584 KB Output is correct
42 Incorrect 6 ms 6748 KB Output isn't correct
43 Incorrect 7 ms 6748 KB Output isn't correct
44 Correct 46 ms 16228 KB Output is correct
45 Incorrect 6 ms 7000 KB Output isn't correct
46 Incorrect 7 ms 6748 KB Output isn't correct
47 Correct 55 ms 18444 KB Output is correct
48 Incorrect 7 ms 6748 KB Output isn't correct
49 Incorrect 7 ms 6624 KB Output isn't correct
50 Correct 66 ms 20580 KB Output is correct
51 Incorrect 8 ms 6748 KB Output isn't correct
52 Incorrect 8 ms 6748 KB Output isn't correct
53 Correct 102 ms 23068 KB Output is correct
54 Incorrect 9 ms 6748 KB Output isn't correct
55 Incorrect 9 ms 6836 KB Output isn't correct
56 Correct 98 ms 25684 KB Output is correct
57 Incorrect 11 ms 6744 KB Output isn't correct
58 Incorrect 10 ms 6620 KB Output isn't correct
59 Correct 123 ms 28520 KB Output is correct
60 Incorrect 15 ms 6624 KB Output isn't correct
61 Incorrect 11 ms 7000 KB Output isn't correct
62 Correct 136 ms 31572 KB Output is correct
63 Incorrect 59 ms 6976 KB Output isn't correct
64 Incorrect 86 ms 6972 KB Output isn't correct
65 Incorrect 85 ms 7004 KB Output isn't correct
66 Incorrect 63 ms 6876 KB Output isn't correct
67 Correct 62 ms 6748 KB Output is correct
68 Incorrect 34 ms 7088 KB Output isn't correct
69 Incorrect 26 ms 7004 KB Output isn't correct
70 Incorrect 24 ms 6944 KB Output isn't correct
71 Incorrect 24 ms 6944 KB Output isn't correct
72 Incorrect 25 ms 6736 KB Output isn't correct
73 Incorrect 43 ms 7516 KB Output isn't correct
74 Incorrect 45 ms 14476 KB Output isn't correct
75 Incorrect 42 ms 7516 KB Output isn't correct
76 Incorrect 33 ms 7504 KB Output isn't correct
77 Incorrect 57 ms 7912 KB Output isn't correct
78 Correct 26 ms 7516 KB Output is correct
79 Incorrect 38 ms 13660 KB Output isn't correct
80 Incorrect 40 ms 7884 KB Output isn't correct
81 Incorrect 27 ms 7516 KB Output isn't correct
82 Incorrect 39 ms 7888 KB Output isn't correct
83 Incorrect 29 ms 7404 KB Output isn't correct
84 Incorrect 45 ms 13752 KB Output isn't correct
85 Incorrect 38 ms 7760 KB Output isn't correct
86 Incorrect 46 ms 7552 KB Output isn't correct
87 Incorrect 41 ms 8284 KB Output isn't correct
88 Incorrect 39 ms 7764 KB Output isn't correct
89 Incorrect 47 ms 14940 KB Output isn't correct
90 Incorrect 26 ms 8284 KB Output isn't correct
91 Incorrect 37 ms 9212 KB Output isn't correct
92 Incorrect 32 ms 8016 KB Output isn't correct