#include<bits/stdc++.h>
using namespace std;
int n, s, disH[1010][1010], dis[1010][1010], xx[] = {0, 0, -1, 1}, xy[] = {-1, 1, 0, 0};
char mp[1010][1010];
queue<tuple<int, int, int>> q;
bool solve(int mid){
for(int i = 1; i <= n; ++i){
for(int j = 1; j <= n; ++j){
if(mp[i][j] == 'M') q.emplace(i, j, 0), dis[i][j] = 0;
else dis[i][j] = 1e9;
}
}
while(!q.empty()){
int x = get<0>(q.front()), y = get<1>(q.front()), w = get<2>(q.front()); q.pop();
if(dis[x][y] < w || (dis[x][y] + 1) / s >= disH[x][y] - mid) continue;
if(mp[x][y] == 'D') return true;
for(int i = 0; i < 4; ++i){
int nx = x + xx[i];
int ny = y + xy[i];
if(nx < 1 || nx > n || ny < 1 || ny > n || mp[nx][ny] == 'T') continue;
if(dis[nx][ny] > w + 1){
dis[nx][ny] = w + 1;
q.emplace(nx, ny, w + 1);
}
}
}
return false;
}
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
cin >> n >> s;
for(int i = 1; i<=n; ++i) for(int j = 1; j <= n; ++j) cin >> mp[i][j];
for(int i = 1; i <= n; ++i){
for(int j = 1; j <=n; ++j){
if(mp[i][j] == 'H') q.emplace(i, j, 0), disH[i][j] = 0;
else disH[i][j] = 1e9;
}
}
while(!q.empty()){
int x = get<0>(q.front()), y = get<1>(q.front()), w = get<2>(q.front()); q.pop();
if(disH[x][y] < w) continue;
for(int i = 0; i < 4; ++i){
int nx = x + xx[i];
int ny = y + xy[i];
if(nx < 1 || nx > n || ny < 1 || ny > n || mp[nx][ny] == 'T') continue;
if(disH[nx][ny] > w + 1){
disH[nx][ny] = w + 1;
q.emplace(nx, ny, w + 1);
}
}
}
int l = 0, r = 1e9, ans = -1;
while(l <= r){
int mid = (l + r) >> 1;
if(solve(mid)) ans = mid, l = mid + 1;
else r = mid - 1;
}
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
4600 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 4 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 5 |
Correct |
1 ms |
4684 KB |
Output is correct |
| 6 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 7 |
Incorrect |
67 ms |
8784 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 11 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 13 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 15 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 16 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 17 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 18 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 19 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 20 |
Correct |
1 ms |
4600 KB |
Output is correct |
| 21 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 22 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 23 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 24 |
Correct |
1 ms |
4640 KB |
Output is correct |
| 25 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 26 |
Correct |
2 ms |
4616 KB |
Output is correct |
| 27 |
Incorrect |
2 ms |
4432 KB |
Output isn't correct |
| 28 |
Correct |
2 ms |
4432 KB |
Output is correct |
| 29 |
Incorrect |
1 ms |
4432 KB |
Output isn't correct |
| 30 |
Correct |
1 ms |
4432 KB |
Output is correct |
| 31 |
Incorrect |
1 ms |
4604 KB |
Output isn't correct |
| 32 |
Correct |
2 ms |
4432 KB |
Output is correct |
| 33 |
Incorrect |
6 ms |
8848 KB |
Output isn't correct |
| 34 |
Correct |
7 ms |
8784 KB |
Output is correct |
| 35 |
Correct |
16 ms |
8784 KB |
Output is correct |
| 36 |
Incorrect |
8 ms |
8784 KB |
Output isn't correct |
| 37 |
Correct |
9 ms |
8784 KB |
Output is correct |
| 38 |
Correct |
20 ms |
8784 KB |
Output is correct |
| 39 |
Incorrect |
10 ms |
8856 KB |
Output isn't correct |
| 40 |
Correct |
10 ms |
8784 KB |
Output is correct |
| 41 |
Correct |
30 ms |
8860 KB |
Output is correct |
| 42 |
Incorrect |
12 ms |
8784 KB |
Output isn't correct |
| 43 |
Correct |
12 ms |
8956 KB |
Output is correct |
| 44 |
Correct |
34 ms |
8784 KB |
Output is correct |
| 45 |
Incorrect |
13 ms |
8784 KB |
Output isn't correct |
| 46 |
Correct |
13 ms |
8784 KB |
Output is correct |
| 47 |
Correct |
40 ms |
8784 KB |
Output is correct |
| 48 |
Incorrect |
16 ms |
9016 KB |
Output isn't correct |
| 49 |
Correct |
16 ms |
8852 KB |
Output is correct |
| 50 |
Correct |
48 ms |
8952 KB |
Output is correct |
| 51 |
Incorrect |
18 ms |
8840 KB |
Output isn't correct |
| 52 |
Correct |
21 ms |
8784 KB |
Output is correct |
| 53 |
Correct |
54 ms |
8784 KB |
Output is correct |
| 54 |
Incorrect |
21 ms |
8784 KB |
Output isn't correct |
| 55 |
Correct |
21 ms |
8784 KB |
Output is correct |
| 56 |
Correct |
63 ms |
8784 KB |
Output is correct |
| 57 |
Incorrect |
25 ms |
8784 KB |
Output isn't correct |
| 58 |
Correct |
24 ms |
8784 KB |
Output is correct |
| 59 |
Correct |
73 ms |
8784 KB |
Output is correct |
| 60 |
Incorrect |
27 ms |
8784 KB |
Output isn't correct |
| 61 |
Correct |
27 ms |
8784 KB |
Output is correct |
| 62 |
Correct |
85 ms |
8784 KB |
Output is correct |
| 63 |
Incorrect |
76 ms |
8784 KB |
Output isn't correct |
| 64 |
Incorrect |
134 ms |
8784 KB |
Output isn't correct |
| 65 |
Correct |
132 ms |
8784 KB |
Output is correct |
| 66 |
Correct |
101 ms |
8784 KB |
Output is correct |
| 67 |
Correct |
90 ms |
8588 KB |
Output is correct |
| 68 |
Correct |
49 ms |
8784 KB |
Output is correct |
| 69 |
Incorrect |
48 ms |
9076 KB |
Output isn't correct |
| 70 |
Correct |
38 ms |
8784 KB |
Output is correct |
| 71 |
Correct |
40 ms |
8844 KB |
Output is correct |
| 72 |
Correct |
37 ms |
8636 KB |
Output is correct |
| 73 |
Correct |
49 ms |
9040 KB |
Output is correct |
| 74 |
Incorrect |
54 ms |
9040 KB |
Output isn't correct |
| 75 |
Correct |
57 ms |
9040 KB |
Output is correct |
| 76 |
Incorrect |
53 ms |
9164 KB |
Output isn't correct |
| 77 |
Correct |
61 ms |
9040 KB |
Output is correct |
| 78 |
Correct |
62 ms |
9040 KB |
Output is correct |
| 79 |
Correct |
50 ms |
9040 KB |
Output is correct |
| 80 |
Correct |
54 ms |
9236 KB |
Output is correct |
| 81 |
Correct |
59 ms |
9040 KB |
Output is correct |
| 82 |
Correct |
51 ms |
9040 KB |
Output is correct |
| 83 |
Correct |
64 ms |
9040 KB |
Output is correct |
| 84 |
Incorrect |
61 ms |
9052 KB |
Output isn't correct |
| 85 |
Correct |
60 ms |
9152 KB |
Output is correct |
| 86 |
Correct |
74 ms |
9040 KB |
Output is correct |
| 87 |
Correct |
69 ms |
9040 KB |
Output is correct |
| 88 |
Correct |
65 ms |
9040 KB |
Output is correct |
| 89 |
Incorrect |
73 ms |
9040 KB |
Output isn't correct |
| 90 |
Correct |
68 ms |
9040 KB |
Output is correct |
| 91 |
Correct |
65 ms |
9040 KB |
Output is correct |
| 92 |
Correct |
65 ms |
9040 KB |
Output is correct |
