| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1016211 |
2024-07-07T13:58:38 Z |
socpite |
Mecho (IOI09_mecho) |
C++14 |
|
121 ms |
24920 KB |
#include<bits/stdc++.h>
using namespace std;
const int maxn = 805;
const int INF = 1e9;
const pair<int, int> mv[4] = {{0, -1}, {0, 1}, {1, 0}, {-1, 0}};
int n, s;
char board[maxn][maxn];
bool inb(int a, int b){
return a >= 1 && a <= n && b >= 1 && b <= n;
}
bool chk(int a, int b){
return inb(a, b) && board[a][b] != 'D' && board[a][b] != 'T';
}
int dm[maxn][maxn], db[maxn][maxn];
int val[maxn][maxn];
vector<pair<int, int>> pq[maxn*maxn];
bool chk(int dist){
queue<pair<int, int>> q;
memset(dm, -1, sizeof(dm));
for(int i = 1; i <= n; i++){
for(int j = 1; j <= n; j++)if(board[i][j] == 'M'){
dm[i][j] = 0;
q.push({i, j});
}
}
while(!q.empty()){
auto x = q.front();
q.pop();
if(dm[x.first][x.second]/s + dist >= db[x.first][x.second])continue;
for(auto v: mv){
int nx = x.first + v.first, ny = x.second + v.second;
if(inb(nx, ny) && board[nx][ny] == 'D')return true;
if(dm[nx][ny] == -1 && chk(nx, ny)){
dm[nx][ny] = dm[x.first][x.second] + 1;
q.push({nx, ny});
}
}
}
return false;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> s;
queue<pair<int, int>> q;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= n; j++){
cin >> board[i][j];
}
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= n; j++){
if(board[i][j] == 'H')q.push({i, j});
else db[i][j] = INF;
}
}
while(!q.empty()){
auto x = q.front();
q.pop();
for(auto v: mv){
int nx = x.first + v.first, ny = x.second + v.second;
if(db[nx][ny] == INF && chk(nx, ny)){
db[nx][ny] = db[x.first][x.second] + 1;
q.push({nx, ny});
}
}
}
int l = -1, r = maxn*maxn;
while(l < r){
int mid = (l+r+1)>>1;
if(chk(mid))l = mid;
else r = mid - 1;
}
cout << l;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
23204 KB |
Output is correct |
| 2 |
Correct |
4 ms |
23128 KB |
Output is correct |
| 3 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 4 |
Correct |
4 ms |
23128 KB |
Output is correct |
| 5 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 6 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 7 |
Correct |
53 ms |
24672 KB |
Output is correct |
| 8 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 9 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 10 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 11 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 12 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 13 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 14 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 15 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 16 |
Correct |
4 ms |
23168 KB |
Output is correct |
| 17 |
Correct |
5 ms |
23132 KB |
Output is correct |
| 18 |
Correct |
4 ms |
23200 KB |
Output is correct |
| 19 |
Correct |
4 ms |
23128 KB |
Output is correct |
| 20 |
Correct |
5 ms |
23132 KB |
Output is correct |
| 21 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 22 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 23 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 24 |
Correct |
4 ms |
23128 KB |
Output is correct |
| 25 |
Correct |
5 ms |
23196 KB |
Output is correct |
| 26 |
Correct |
6 ms |
23132 KB |
Output is correct |
| 27 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 28 |
Correct |
4 ms |
23348 KB |
Output is correct |
| 29 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 30 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 31 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 32 |
Correct |
4 ms |
23132 KB |
Output is correct |
| 33 |
Correct |
6 ms |
23644 KB |
Output is correct |
| 34 |
Correct |
6 ms |
23604 KB |
Output is correct |
| 35 |
Correct |
14 ms |
23692 KB |
Output is correct |
| 36 |
Correct |
8 ms |
23644 KB |
Output is correct |
| 37 |
Correct |
7 ms |
23644 KB |
Output is correct |
| 38 |
Correct |
17 ms |
23644 KB |
Output is correct |
| 39 |
Correct |
8 ms |
23640 KB |
Output is correct |
| 40 |
Correct |
8 ms |
23644 KB |
Output is correct |
| 41 |
Correct |
21 ms |
23760 KB |
Output is correct |
| 42 |
Correct |
12 ms |
23900 KB |
Output is correct |
| 43 |
Correct |
9 ms |
23900 KB |
Output is correct |
| 44 |
Correct |
31 ms |
24144 KB |
Output is correct |
| 45 |
Correct |
10 ms |
23900 KB |
Output is correct |
| 46 |
Correct |
10 ms |
24016 KB |
Output is correct |
| 47 |
Correct |
31 ms |
23900 KB |
Output is correct |
| 48 |
Correct |
15 ms |
23900 KB |
Output is correct |
| 49 |
Correct |
11 ms |
24036 KB |
Output is correct |
| 50 |
Correct |
36 ms |
23900 KB |
Output is correct |
| 51 |
Correct |
14 ms |
24152 KB |
Output is correct |
| 52 |
Correct |
14 ms |
23968 KB |
Output is correct |
| 53 |
Correct |
50 ms |
24156 KB |
Output is correct |
| 54 |
Correct |
15 ms |
24156 KB |
Output is correct |
| 55 |
Correct |
15 ms |
24152 KB |
Output is correct |
| 56 |
Correct |
56 ms |
24156 KB |
Output is correct |
| 57 |
Correct |
15 ms |
24412 KB |
Output is correct |
| 58 |
Correct |
17 ms |
24408 KB |
Output is correct |
| 59 |
Correct |
57 ms |
24420 KB |
Output is correct |
| 60 |
Correct |
17 ms |
24412 KB |
Output is correct |
| 61 |
Correct |
18 ms |
24548 KB |
Output is correct |
| 62 |
Correct |
71 ms |
24452 KB |
Output is correct |
| 63 |
Correct |
79 ms |
24412 KB |
Output is correct |
| 64 |
Correct |
121 ms |
24412 KB |
Output is correct |
| 65 |
Correct |
101 ms |
24412 KB |
Output is correct |
| 66 |
Correct |
72 ms |
24408 KB |
Output is correct |
| 67 |
Correct |
82 ms |
24412 KB |
Output is correct |
| 68 |
Correct |
39 ms |
24408 KB |
Output is correct |
| 69 |
Correct |
39 ms |
24404 KB |
Output is correct |
| 70 |
Correct |
28 ms |
24408 KB |
Output is correct |
| 71 |
Correct |
34 ms |
24412 KB |
Output is correct |
| 72 |
Correct |
29 ms |
24412 KB |
Output is correct |
| 73 |
Correct |
30 ms |
24668 KB |
Output is correct |
| 74 |
Correct |
38 ms |
24664 KB |
Output is correct |
| 75 |
Correct |
44 ms |
24668 KB |
Output is correct |
| 76 |
Correct |
42 ms |
24668 KB |
Output is correct |
| 77 |
Correct |
55 ms |
24668 KB |
Output is correct |
| 78 |
Correct |
46 ms |
24732 KB |
Output is correct |
| 79 |
Correct |
34 ms |
24668 KB |
Output is correct |
| 80 |
Correct |
43 ms |
24668 KB |
Output is correct |
| 81 |
Correct |
46 ms |
24664 KB |
Output is correct |
| 82 |
Correct |
45 ms |
24660 KB |
Output is correct |
| 83 |
Correct |
51 ms |
24748 KB |
Output is correct |
| 84 |
Correct |
55 ms |
24660 KB |
Output is correct |
| 85 |
Correct |
50 ms |
24656 KB |
Output is correct |
| 86 |
Correct |
50 ms |
24612 KB |
Output is correct |
| 87 |
Correct |
49 ms |
24664 KB |
Output is correct |
| 88 |
Correct |
69 ms |
24668 KB |
Output is correct |
| 89 |
Correct |
54 ms |
24668 KB |
Output is correct |
| 90 |
Correct |
71 ms |
24656 KB |
Output is correct |
| 91 |
Correct |
57 ms |
24920 KB |
Output is correct |
| 92 |
Correct |
57 ms |
24668 KB |
Output is correct |
