| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 759170 |
2023-06-15T20:11:56 Z |
bane |
Mecho (IOI09_mecho) |
C++17 |
|
158 ms |
6412 KB |
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
#define all(x) x.begin(), x.end()
int n, s, times[802][802];
vector<string> v(802);
pair<int, int> st, en;
const int dx[4] = {0, 0, -1, 1};
const int dy[4] = {-1, 1, 0, 0};
inline bool valid(int x, int y) {
return (x >= 0 && x < n && y >= 0 && y < n && v[x][y] != 'T' && v[x][y] != 'H');
}
bool check(int m) {
if (m >= times[st.first][st.second]) return 0;
queue<pair<int, int>> q;
q.push(st);
int vis[n + 2][n + 2];
memset(vis, -1, sizeof(vis));
vis[st.first][st.second] = 0;
while (!q.empty()) {
int x = q.front().first, y = q.front().second;
q.pop();
int dist = vis[x][y];
// cout<<x<<" "<<y<<" "<<dist<<" "<<m<<endl;
for (int d = 0; d < 4; d++) {
int nx = x + dx[d], ny = y + dy[d];
if (valid(nx, ny) && (dist + 1) / s + m< times[nx][ny] && vis[nx][ny] == -1) {
vis[nx][ny] = dist+1;
q.push({nx, ny});
if (make_pair(nx, ny) == en) return 1;
}
}
}
return 0;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> s;
queue<pair<int, int>> h;
for (int i = 0; i < n; i++) {
cin >> v[i];
for (int j = 0; j < n; j++) {
times[i][j] = (int)1e9;
if (v[i][j] == 'M') st = {i, j};
if (v[i][j] == 'H') {
h.push({i, j});
times[i][j] = 0;
}
if (v[i][j] == 'D') en = {i, j};
}
}
while (h.size() > 0) {
int x = h.front().first, y = h.front().second;
h.pop();
for (int d = 0; d < 4; d++) {
int nx = x + dx[d], ny = y + dy[d];
if (valid(nx, ny) && times[x][y] + 1 < times[nx][ny]) {
times[nx][ny] = times[x][y] + 1;
h.push({nx, ny});
}
}
}
int l = 0, r = n * n + 100, ans = -1;
while (l <= r) {
int m = (l + r) / 2;
if (check(m)){
l = m + 1;
ans = m;
}else r = m - 1;
}
cout<<ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 7 |
Incorrect |
76 ms |
6100 KB |
Output isn't correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
0 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 13 |
Correct |
1 ms |
468 KB |
Output is correct |
| 14 |
Correct |
1 ms |
468 KB |
Output is correct |
| 15 |
Correct |
0 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
340 KB |
Output is correct |
| 19 |
Correct |
0 ms |
340 KB |
Output is correct |
| 20 |
Correct |
0 ms |
340 KB |
Output is correct |
| 21 |
Correct |
0 ms |
468 KB |
Output is correct |
| 22 |
Correct |
0 ms |
468 KB |
Output is correct |
| 23 |
Correct |
0 ms |
468 KB |
Output is correct |
| 24 |
Correct |
0 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
468 KB |
Output is correct |
| 27 |
Correct |
1 ms |
468 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
596 KB |
Output is correct |
| 31 |
Correct |
1 ms |
596 KB |
Output is correct |
| 32 |
Correct |
1 ms |
596 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2004 KB |
Output is correct |
| 34 |
Correct |
3 ms |
2004 KB |
Output is correct |
| 35 |
Correct |
17 ms |
2004 KB |
Output is correct |
| 36 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 37 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 38 |
Correct |
23 ms |
2412 KB |
Output is correct |
| 39 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 40 |
Correct |
4 ms |
2776 KB |
Output is correct |
| 41 |
Correct |
31 ms |
2792 KB |
Output is correct |
| 42 |
Correct |
4 ms |
3156 KB |
Output is correct |
| 43 |
Correct |
4 ms |
3156 KB |
Output is correct |
| 44 |
Correct |
39 ms |
3156 KB |
Output is correct |
| 45 |
Correct |
5 ms |
3540 KB |
Output is correct |
| 46 |
Correct |
5 ms |
3540 KB |
Output is correct |
| 47 |
Correct |
43 ms |
3568 KB |
Output is correct |
| 48 |
Correct |
6 ms |
3924 KB |
Output is correct |
| 49 |
Correct |
6 ms |
3924 KB |
Output is correct |
| 50 |
Correct |
55 ms |
3924 KB |
Output is correct |
| 51 |
Correct |
7 ms |
4436 KB |
Output is correct |
| 52 |
Correct |
7 ms |
4436 KB |
Output is correct |
| 53 |
Correct |
68 ms |
4488 KB |
Output is correct |
| 54 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 55 |
Correct |
8 ms |
4988 KB |
Output is correct |
| 56 |
Correct |
85 ms |
4996 KB |
Output is correct |
| 57 |
Correct |
9 ms |
5460 KB |
Output is correct |
| 58 |
Correct |
9 ms |
5440 KB |
Output is correct |
| 59 |
Correct |
93 ms |
5460 KB |
Output is correct |
| 60 |
Correct |
9 ms |
6032 KB |
Output is correct |
| 61 |
Correct |
10 ms |
5972 KB |
Output is correct |
| 62 |
Correct |
118 ms |
6048 KB |
Output is correct |
| 63 |
Correct |
84 ms |
6048 KB |
Output is correct |
| 64 |
Correct |
158 ms |
6024 KB |
Output is correct |
| 65 |
Correct |
120 ms |
6044 KB |
Output is correct |
| 66 |
Correct |
98 ms |
5972 KB |
Output is correct |
| 67 |
Correct |
92 ms |
6032 KB |
Output is correct |
| 68 |
Correct |
35 ms |
5976 KB |
Output is correct |
| 69 |
Correct |
34 ms |
5972 KB |
Output is correct |
| 70 |
Correct |
25 ms |
5972 KB |
Output is correct |
| 71 |
Correct |
30 ms |
6000 KB |
Output is correct |
| 72 |
Correct |
20 ms |
5972 KB |
Output is correct |
| 73 |
Correct |
24 ms |
6308 KB |
Output is correct |
| 74 |
Correct |
55 ms |
6236 KB |
Output is correct |
| 75 |
Correct |
70 ms |
6312 KB |
Output is correct |
| 76 |
Correct |
57 ms |
6236 KB |
Output is correct |
| 77 |
Correct |
55 ms |
6312 KB |
Output is correct |
| 78 |
Correct |
67 ms |
6412 KB |
Output is correct |
| 79 |
Correct |
37 ms |
6284 KB |
Output is correct |
| 80 |
Correct |
50 ms |
6220 KB |
Output is correct |
| 81 |
Correct |
58 ms |
6228 KB |
Output is correct |
| 82 |
Correct |
49 ms |
6284 KB |
Output is correct |
| 83 |
Correct |
71 ms |
6244 KB |
Output is correct |
| 84 |
Correct |
70 ms |
6244 KB |
Output is correct |
| 85 |
Correct |
75 ms |
6176 KB |
Output is correct |
| 86 |
Correct |
71 ms |
6228 KB |
Output is correct |
| 87 |
Correct |
66 ms |
6228 KB |
Output is correct |
| 88 |
Correct |
74 ms |
6128 KB |
Output is correct |
| 89 |
Correct |
75 ms |
6100 KB |
Output is correct |
| 90 |
Correct |
87 ms |
6196 KB |
Output is correct |
| 91 |
Correct |
75 ms |
6128 KB |
Output is correct |
| 92 |
Correct |
81 ms |
6188 KB |
Output is correct |
