#include<bits/stdc++.h>
using namespace std;
#define pi pair<int, int>
char a[1015][1015];
int dx[] = {0, 0, 0, 1, -1, -1, 1, 1, -1};
int dy[] = {0, 1, -1, 0, 0, -1, -1, 1, 1};
int bear[1105][1015], bee[1105][1015], xx = -1, yy = -1, xxx = -1, yyy = -1, n, kk;
bool asdasd = 0;
bool can(int k) {
if ( k >= bee[xx][yy] ) return 0;
for ( int i = 1; i <= n; i++ )
for ( int j = 1; j <= n; j++ )
bear[i][j] = INT_MAX;
bear[xx][yy] = 0;
queue < pi > q;
q.push(make_pair(xx, yy));
int x, y;
while(!q.empty()) {
tie(x, y) = q.front();
q.pop();
for(int i = 1; i <= 4; i++) {
int x1 = x + dx[i], y1 = y + dy[i];
if ( a[x1][y1] == 'D' ) {asdasd = 1; return 1;}
if ( a[x1][y1] == 'G' && bear[x][y] + 1 < kk * ( bee[x1][y1] - k ) && bear[x1][y1] == INT_MAX ) {
bear[x1][y1] = bear[x][y] + 1;
q.push ( make_pair ( x1, y1 ) );
}
}
}
return 0;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> kk;
queue < pi > p;
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= n; j++) {
bee[i][j] = INT_MAX;
a[i][j] = getchar();
if ( a[i][j] == 'H' ) {p.push(make_pair(i, j)); bee[i][j] = 0;}
if ( a[i][j] == 'M' ) xx = i, yy = j;
}
}
while(!p.empty()) {
int x, y; tie(x, y) = p.front(); p.pop();
for ( int i = 1; i <= 4; i++ ) {
int x1 = x + dx[i], y1 = y + dy[i];
if ( bee[x1][y1] == INT_MAX && ( a[x1][y1] == 'G' || a[x1][y1] == 'M' ) ) {
bee[x1][y1] = bee[x][y] + 1; p.push ( make_pair ( x1, y1 ) );
}
}
}
int k = 0, mm = n * n ;
for(int i = mm/2; i >= 1; i /= 2)
while(i + k <= mm && can(i+k))
k += i;
if ( !can(0) ) cout << -1;
else cout << k;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
3 ms |
384 KB |
Output isn't correct |
2 |
Incorrect |
2 ms |
384 KB |
Output isn't correct |
3 |
Incorrect |
2 ms |
384 KB |
Output isn't correct |
4 |
Incorrect |
2 ms |
384 KB |
Output isn't correct |
5 |
Incorrect |
3 ms |
384 KB |
Output isn't correct |
6 |
Incorrect |
3 ms |
384 KB |
Output isn't correct |
7 |
Incorrect |
47 ms |
7800 KB |
Output isn't correct |
8 |
Correct |
3 ms |
512 KB |
Output is correct |
9 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
10 |
Incorrect |
3 ms |
512 KB |
Output isn't correct |
11 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
12 |
Incorrect |
4 ms |
896 KB |
Output isn't correct |
13 |
Incorrect |
5 ms |
768 KB |
Output isn't correct |
14 |
Correct |
4 ms |
896 KB |
Output is correct |
15 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
16 |
Incorrect |
3 ms |
640 KB |
Output isn't correct |
17 |
Incorrect |
3 ms |
512 KB |
Output isn't correct |
18 |
Incorrect |
2 ms |
512 KB |
Output isn't correct |
19 |
Incorrect |
3 ms |
640 KB |
Output isn't correct |
20 |
Incorrect |
3 ms |
640 KB |
Output isn't correct |
21 |
Incorrect |
3 ms |
768 KB |
Output isn't correct |
22 |
Incorrect |
3 ms |
768 KB |
Output isn't correct |
23 |
Incorrect |
4 ms |
896 KB |
Output isn't correct |
24 |
Incorrect |
5 ms |
896 KB |
Output isn't correct |
25 |
Incorrect |
6 ms |
1024 KB |
Output isn't correct |
26 |
Incorrect |
4 ms |
896 KB |
Output isn't correct |
27 |
Incorrect |
5 ms |
896 KB |
Output isn't correct |
28 |
Incorrect |
4 ms |
896 KB |
Output isn't correct |
29 |
Incorrect |
5 ms |
1024 KB |
Output isn't correct |
30 |
Incorrect |
5 ms |
1024 KB |
Output isn't correct |
31 |
Incorrect |
5 ms |
1024 KB |
Output isn't correct |
32 |
Incorrect |
5 ms |
1024 KB |
Output isn't correct |
33 |
Incorrect |
10 ms |
3456 KB |
Output isn't correct |
34 |
Incorrect |
10 ms |
3456 KB |
Output isn't correct |
35 |
Incorrect |
10 ms |
3584 KB |
Output isn't correct |
36 |
Incorrect |
11 ms |
3968 KB |
Output isn't correct |
37 |
Incorrect |
12 ms |
3968 KB |
Output isn't correct |
38 |
Incorrect |
15 ms |
3916 KB |
Output isn't correct |
39 |
Incorrect |
11 ms |
4352 KB |
Output isn't correct |
40 |
Incorrect |
12 ms |
4324 KB |
Output isn't correct |
41 |
Incorrect |
19 ms |
4472 KB |
Output isn't correct |
42 |
Incorrect |
13 ms |
4780 KB |
Output isn't correct |
43 |
Incorrect |
13 ms |
4864 KB |
Output isn't correct |
44 |
Incorrect |
15 ms |
4864 KB |
Output isn't correct |
45 |
Incorrect |
21 ms |
5248 KB |
Output isn't correct |
46 |
Incorrect |
15 ms |
5248 KB |
Output isn't correct |
47 |
Incorrect |
16 ms |
5248 KB |
Output isn't correct |
48 |
Incorrect |
16 ms |
5760 KB |
Output isn't correct |
49 |
Incorrect |
18 ms |
5760 KB |
Output isn't correct |
50 |
Incorrect |
17 ms |
5760 KB |
Output isn't correct |
51 |
Incorrect |
20 ms |
6144 KB |
Output isn't correct |
52 |
Incorrect |
20 ms |
6144 KB |
Output isn't correct |
53 |
Incorrect |
17 ms |
6144 KB |
Output isn't correct |
54 |
Incorrect |
23 ms |
6628 KB |
Output isn't correct |
55 |
Incorrect |
24 ms |
6628 KB |
Output isn't correct |
56 |
Incorrect |
25 ms |
6656 KB |
Output isn't correct |
57 |
Incorrect |
32 ms |
7168 KB |
Output isn't correct |
58 |
Incorrect |
24 ms |
7040 KB |
Output isn't correct |
59 |
Incorrect |
23 ms |
7040 KB |
Output isn't correct |
60 |
Incorrect |
25 ms |
7552 KB |
Output isn't correct |
61 |
Incorrect |
26 ms |
7552 KB |
Output isn't correct |
62 |
Incorrect |
32 ms |
7456 KB |
Output isn't correct |
63 |
Incorrect |
38 ms |
7544 KB |
Output isn't correct |
64 |
Incorrect |
43 ms |
7672 KB |
Output isn't correct |
65 |
Incorrect |
39 ms |
7544 KB |
Output isn't correct |
66 |
Incorrect |
41 ms |
7552 KB |
Output isn't correct |
67 |
Correct |
40 ms |
7552 KB |
Output is correct |
68 |
Incorrect |
50 ms |
7544 KB |
Output isn't correct |
69 |
Incorrect |
62 ms |
7544 KB |
Output isn't correct |
70 |
Incorrect |
48 ms |
7672 KB |
Output isn't correct |
71 |
Incorrect |
48 ms |
7544 KB |
Output isn't correct |
72 |
Incorrect |
67 ms |
7512 KB |
Output isn't correct |
73 |
Incorrect |
38 ms |
7800 KB |
Output isn't correct |
74 |
Incorrect |
36 ms |
7800 KB |
Output isn't correct |
75 |
Incorrect |
37 ms |
7800 KB |
Output isn't correct |
76 |
Incorrect |
42 ms |
7772 KB |
Output isn't correct |
77 |
Incorrect |
41 ms |
7800 KB |
Output isn't correct |
78 |
Correct |
77 ms |
7720 KB |
Output is correct |
79 |
Incorrect |
157 ms |
7680 KB |
Output isn't correct |
80 |
Incorrect |
88 ms |
7908 KB |
Output isn't correct |
81 |
Incorrect |
66 ms |
7796 KB |
Output isn't correct |
82 |
Incorrect |
75 ms |
7928 KB |
Output isn't correct |
83 |
Incorrect |
42 ms |
7672 KB |
Output isn't correct |
84 |
Incorrect |
48 ms |
7716 KB |
Output isn't correct |
85 |
Incorrect |
49 ms |
7800 KB |
Output isn't correct |
86 |
Incorrect |
41 ms |
7772 KB |
Output isn't correct |
87 |
Incorrect |
38 ms |
7804 KB |
Output isn't correct |
88 |
Incorrect |
48 ms |
7672 KB |
Output isn't correct |
89 |
Incorrect |
49 ms |
7672 KB |
Output isn't correct |
90 |
Incorrect |
42 ms |
7672 KB |
Output isn't correct |
91 |
Incorrect |
44 ms |
7672 KB |
Output isn't correct |
92 |
Incorrect |
47 ms |
7672 KB |
Output isn't correct |