| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 980566 |
2024-05-12T08:45:22 Z |
BF001 |
Mecho (IOI09_mecho) |
C++17 |
|
150 ms |
6388 KB |
#include <bits/stdc++.h>
using namespace std;
#define N 805
#define fi first
#define se second
typedef pair<int, int> ii;
int n, d[N][N], d1[N][N], xs, ys, xe, ye, s;
vector<ii> o;
char a[N][N];
int dx[4] = {0, 1, 0, -1};
int dy[4] = {1, 0, -1, 0};
bool in(int u, int v){
return u >= 1 && u <= n && v >= 1 && v <= n && a[u][v] != 'T';
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(NULL);
queue<ii> q;
cin >> n >> s;
for (int i = 1; i <= n; i++){
for (int j = 1; j <= n; j++){
d1[i][j] = d[i][j] = 1e9;
}
}
for (int i = 1; i <= n; i++){
for (int j = 1; j <= n; j++){
cin >> a[i][j];
if (a[i][j] == 'H') {
d1[i][j] = 0;
q.push({i, j});
}
if (a[i][j] == 'D'){
xe = i;
ye = j;
}
if (a[i][j] == 'M'){
xs = i;
ys = j;
}
}
}
while (!q.empty()){
int u = q.front().fi;
int v = q.front().se;
q.pop();
for (int i = 0; i <= 3; i++){
int newu = u + dx[i];
int newv = v + dy[i];
if (!in(newu, newv)) continue;
if (newu == xe && newv == ye) continue;
if (d1[newu][newv] > d1[u][v] + 1){
d1[newu][newv] = d1[u][v] + 1;
q.push({newu, newv});
}
}
}
int l = 0, r = n * n, rt = -1;
while (l <= r){
int mid = (l + r) >> 1;
for (int i = 1; i <= n; i++){
for (int j = 1; j <= n; j++) d[i][j] = 1e9;
}
d[xs][ys] = 0;
q.push({xs, ys});
while (!q.empty()){
int u = q.front().fi;
int v = q.front().se;
q.pop();
for (int i = 0; i <= 3; i++){
int newu = u + dx[i];
int newv = v + dy[i];
if (!in(newu, newv)) continue;
int newd = mid + (d[u][v] + 1) / s;
if (d1[newu][newv] <= newd) continue;
if (d[newu][newv] > d[u][v] + 1){
d[newu][newv] = d[u][v] + 1;
q.push({newu, newv});
}
}
}
if (d1[xs][ys] <= mid) d[xe][ye] = 1e9;
if (d[xe][ye] != 1e9) {rt = mid; l = mid + 1;}
else r = mid - 1;
}
cout << rt;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
74 ms |
6236 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4564 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 24 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 25 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 26 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 27 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 28 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 29 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 30 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 31 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 32 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 33 |
Correct |
4 ms |
4700 KB |
Output is correct |
| 34 |
Correct |
4 ms |
4744 KB |
Output is correct |
| 35 |
Correct |
17 ms |
4700 KB |
Output is correct |
| 36 |
Correct |
5 ms |
4700 KB |
Output is correct |
| 37 |
Correct |
8 ms |
4896 KB |
Output is correct |
| 38 |
Correct |
23 ms |
4856 KB |
Output is correct |
| 39 |
Correct |
7 ms |
4956 KB |
Output is correct |
| 40 |
Correct |
7 ms |
4956 KB |
Output is correct |
| 41 |
Correct |
32 ms |
5056 KB |
Output is correct |
| 42 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 43 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 44 |
Correct |
38 ms |
4956 KB |
Output is correct |
| 45 |
Correct |
10 ms |
5212 KB |
Output is correct |
| 46 |
Correct |
10 ms |
5364 KB |
Output is correct |
| 47 |
Correct |
42 ms |
5212 KB |
Output is correct |
| 48 |
Correct |
11 ms |
5468 KB |
Output is correct |
| 49 |
Correct |
12 ms |
5468 KB |
Output is correct |
| 50 |
Correct |
51 ms |
5508 KB |
Output is correct |
| 51 |
Correct |
13 ms |
5468 KB |
Output is correct |
| 52 |
Correct |
14 ms |
5676 KB |
Output is correct |
| 53 |
Correct |
65 ms |
5680 KB |
Output is correct |
| 54 |
Correct |
15 ms |
5724 KB |
Output is correct |
| 55 |
Correct |
16 ms |
5724 KB |
Output is correct |
| 56 |
Correct |
75 ms |
5724 KB |
Output is correct |
| 57 |
Correct |
18 ms |
5980 KB |
Output is correct |
| 58 |
Correct |
18 ms |
5976 KB |
Output is correct |
| 59 |
Correct |
87 ms |
5980 KB |
Output is correct |
| 60 |
Correct |
20 ms |
5980 KB |
Output is correct |
| 61 |
Correct |
20 ms |
5980 KB |
Output is correct |
| 62 |
Correct |
98 ms |
6136 KB |
Output is correct |
| 63 |
Correct |
80 ms |
5980 KB |
Output is correct |
| 64 |
Correct |
150 ms |
5976 KB |
Output is correct |
| 65 |
Correct |
112 ms |
5976 KB |
Output is correct |
| 66 |
Correct |
91 ms |
6140 KB |
Output is correct |
| 67 |
Correct |
87 ms |
6100 KB |
Output is correct |
| 68 |
Correct |
41 ms |
5980 KB |
Output is correct |
| 69 |
Correct |
48 ms |
5980 KB |
Output is correct |
| 70 |
Correct |
31 ms |
5976 KB |
Output is correct |
| 71 |
Correct |
35 ms |
5976 KB |
Output is correct |
| 72 |
Correct |
28 ms |
6184 KB |
Output is correct |
| 73 |
Correct |
35 ms |
6236 KB |
Output is correct |
| 74 |
Correct |
50 ms |
6236 KB |
Output is correct |
| 75 |
Correct |
62 ms |
6232 KB |
Output is correct |
| 76 |
Correct |
54 ms |
6236 KB |
Output is correct |
| 77 |
Correct |
53 ms |
6232 KB |
Output is correct |
| 78 |
Correct |
67 ms |
6236 KB |
Output is correct |
| 79 |
Correct |
41 ms |
6236 KB |
Output is correct |
| 80 |
Correct |
63 ms |
6388 KB |
Output is correct |
| 81 |
Correct |
60 ms |
6232 KB |
Output is correct |
| 82 |
Correct |
53 ms |
6236 KB |
Output is correct |
| 83 |
Correct |
70 ms |
6236 KB |
Output is correct |
| 84 |
Correct |
58 ms |
6232 KB |
Output is correct |
| 85 |
Correct |
65 ms |
6232 KB |
Output is correct |
| 86 |
Correct |
64 ms |
6232 KB |
Output is correct |
| 87 |
Correct |
63 ms |
6108 KB |
Output is correct |
| 88 |
Correct |
68 ms |
6296 KB |
Output is correct |
| 89 |
Correct |
66 ms |
6296 KB |
Output is correct |
| 90 |
Correct |
71 ms |
6232 KB |
Output is correct |
| 91 |
Correct |
69 ms |
6236 KB |
Output is correct |
| 92 |
Correct |
75 ms |
6236 KB |
Output is correct |
