| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 611686 |
2022-07-29T06:37:21 Z |
Belgutei |
Mecho (IOI09_mecho) |
C++17 |
|
152 ms |
8808 KB |
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mk make_pair
#define IOS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n,m;
int b[805][806];
queue<pair<int,int> > q;
int stx, sty;
int cnt[805][805];
int tmp[805][805];
bool check = 0;
char ch[805][805];
int main() {
IOS
cin >> n >> m;
for(int i = 1; i <= n; i ++) {
for(int j = 1; j <= n; j ++) {
cin >> ch[i][j];
if(ch[i][j] == 'H') {
b[i][j] = 1;
q.push({i,j});
}
if(ch[i][j] == 'M') {
stx = i;
sty = j;
}
}
}
while(q.size() > 0) {
int x = q.front().ff;
int y = q.front().ss;
q.pop();
if(x > 1 && b[x - 1][y] == 0 && ch[x - 1][y] != 'T' && ch[x - 1][y] != 'D') {
q.push({x - 1, y});
b[x - 1][y] = b[x][y] + 1;
}
if(x < n && b[x + 1][y] == 0 && ch[x + 1][y] != 'T' && ch[x + 1][y] != 'D') {
q.push({x + 1, y});
b[x + 1][y] = b[x][y] + 1;
}
if(y > 1 && b[x][y - 1] == 0 && ch[x][y - 1] != 'T' && ch[x][y - 1] != 'D') {
q.push({x, y - 1});
b[x][y - 1] = b[x][y] + 1;
}
if(y < n && b[x][y + 1] == 0 && ch[x][y + 1] != 'T' && ch[x][y + 1] != 'D') {
q.push({x, y + 1});
b[x][y + 1] = b[x][y] + 1;
}
}
for(int i = 1; i <= n; i ++) {
for(int j = 1; j <= n; j ++) {
if(b[i][j] == 0) b[i][j] = 1e9;
}
}
int l = 0;
int r = n * n;
while(l < r) {
int mid = (l + r + 1) / 2;
memset(cnt, -1, sizeof(cnt));
while(q.size() > 0) q.pop();
q.push({stx,sty});
cnt[stx][sty] = mid;
tmp[stx][sty] = m;
bool ok = 0;
while(q.size() > 0) {
int x = q.front().ff;
int y = q.front().ss;
q.pop();
int num = cnt[x][y];
int move = tmp[x][y];
if(tmp[x][y] == m) {
num ++;
move = 0;
}
move ++;
//
if(x > 1 && cnt[x - 1][y] == -1 && num < b[x - 1][y] && ch[x - 1][y] != 'T') {
if(ch[x - 1][y] == 'D') { // home location
ok = 1; break;
}
cnt[x - 1][y] = num;
tmp[x - 1][y] = move;
q.push({x - 1, y});
}
//
if(x < n && cnt[x + 1][y] == -1 && num < b[x + 1][y] && ch[x + 1][y] != 'T') {
if(ch[x + 1][y] == 'D') { // home location
ok = 1; break;
}
cnt[x + 1][y] = num;
tmp[x + 1][y] = move;
q.push({x + 1, y});
}
//
if(y > 1 && cnt[x][y - 1] == -1 && num < b[x][y - 1] && ch[x][y - 1] != 'T') {
if(ch[x][y - 1] == 'D') { // home location
ok = 1; break;
}
cnt[x][y - 1] = num;
tmp[x][y - 1] = move;
q.push({x, y - 1});
}
//
if(y < n && cnt[x][y + 1] == -1 && num < b[x][y + 1] && ch[x][y + 1] != 'T') {
if(ch[x][y + 1] == 'D') { // home location
ok = 1; break;
}
cnt[x][y + 1] = num;
tmp[x][y + 1] = move;
q.push({x, y + 1});
}
}
if(ok == 1) {
check = 1;
l = mid;
}
else r = mid - 1;
}
if(check == 1){
cout << l - 1;
}
else cout << -1;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2900 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2900 KB |
Output is correct |
| 3 |
Correct |
2 ms |
2900 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2900 KB |
Output is correct |
| 5 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 6 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 7 |
Incorrect |
59 ms |
7536 KB |
Output isn't correct |
| 8 |
Correct |
2 ms |
2900 KB |
Output is correct |
| 9 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 12 |
Incorrect |
2 ms |
3028 KB |
Output isn't correct |
| 13 |
Correct |
2 ms |
3156 KB |
Output is correct |
| 14 |
Correct |
3 ms |
3156 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2900 KB |
Output is correct |
| 16 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 17 |
Correct |
4 ms |
2900 KB |
Output is correct |
| 18 |
Incorrect |
3 ms |
3000 KB |
Output isn't correct |
| 19 |
Correct |
3 ms |
2900 KB |
Output is correct |
| 20 |
Incorrect |
2 ms |
2900 KB |
Output isn't correct |
| 21 |
Correct |
2 ms |
3028 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
3116 KB |
Output isn't correct |
| 23 |
Correct |
2 ms |
3028 KB |
Output is correct |
| 24 |
Incorrect |
2 ms |
3028 KB |
Output isn't correct |
| 25 |
Correct |
2 ms |
3028 KB |
Output is correct |
| 26 |
Incorrect |
2 ms |
3028 KB |
Output isn't correct |
| 27 |
Correct |
2 ms |
3028 KB |
Output is correct |
| 28 |
Incorrect |
4 ms |
3156 KB |
Output isn't correct |
| 29 |
Correct |
3 ms |
3168 KB |
Output is correct |
| 30 |
Incorrect |
3 ms |
3156 KB |
Output isn't correct |
| 31 |
Correct |
3 ms |
3156 KB |
Output is correct |
| 32 |
Incorrect |
3 ms |
3156 KB |
Output isn't correct |
| 33 |
Correct |
7 ms |
4308 KB |
Output is correct |
| 34 |
Incorrect |
8 ms |
4180 KB |
Output isn't correct |
| 35 |
Incorrect |
17 ms |
5364 KB |
Output isn't correct |
| 36 |
Correct |
8 ms |
4436 KB |
Output is correct |
| 37 |
Incorrect |
7 ms |
4436 KB |
Output isn't correct |
| 38 |
Incorrect |
23 ms |
5716 KB |
Output isn't correct |
| 39 |
Correct |
8 ms |
4564 KB |
Output is correct |
| 40 |
Incorrect |
7 ms |
4564 KB |
Output isn't correct |
| 41 |
Incorrect |
36 ms |
6068 KB |
Output isn't correct |
| 42 |
Correct |
11 ms |
4756 KB |
Output is correct |
| 43 |
Incorrect |
9 ms |
4820 KB |
Output isn't correct |
| 44 |
Incorrect |
33 ms |
6404 KB |
Output isn't correct |
| 45 |
Correct |
12 ms |
4964 KB |
Output is correct |
| 46 |
Incorrect |
9 ms |
5076 KB |
Output isn't correct |
| 47 |
Incorrect |
42 ms |
6772 KB |
Output isn't correct |
| 48 |
Correct |
11 ms |
5216 KB |
Output is correct |
| 49 |
Incorrect |
11 ms |
5260 KB |
Output isn't correct |
| 50 |
Incorrect |
53 ms |
7112 KB |
Output isn't correct |
| 51 |
Correct |
12 ms |
5348 KB |
Output is correct |
| 52 |
Incorrect |
14 ms |
5460 KB |
Output isn't correct |
| 53 |
Incorrect |
84 ms |
7464 KB |
Output isn't correct |
| 54 |
Correct |
16 ms |
5560 KB |
Output is correct |
| 55 |
Incorrect |
14 ms |
5672 KB |
Output isn't correct |
| 56 |
Incorrect |
82 ms |
7816 KB |
Output isn't correct |
| 57 |
Correct |
18 ms |
5776 KB |
Output is correct |
| 58 |
Incorrect |
15 ms |
5844 KB |
Output isn't correct |
| 59 |
Incorrect |
96 ms |
8176 KB |
Output isn't correct |
| 60 |
Correct |
18 ms |
5936 KB |
Output is correct |
| 61 |
Incorrect |
16 ms |
6064 KB |
Output isn't correct |
| 62 |
Incorrect |
131 ms |
8528 KB |
Output isn't correct |
| 63 |
Incorrect |
87 ms |
8528 KB |
Output isn't correct |
| 64 |
Incorrect |
152 ms |
8536 KB |
Output isn't correct |
| 65 |
Incorrect |
116 ms |
8532 KB |
Output isn't correct |
| 66 |
Correct |
115 ms |
8536 KB |
Output is correct |
| 67 |
Correct |
109 ms |
8512 KB |
Output is correct |
| 68 |
Incorrect |
42 ms |
8256 KB |
Output isn't correct |
| 69 |
Incorrect |
41 ms |
8524 KB |
Output isn't correct |
| 70 |
Incorrect |
48 ms |
8652 KB |
Output isn't correct |
| 71 |
Incorrect |
48 ms |
8636 KB |
Output isn't correct |
| 72 |
Correct |
35 ms |
6676 KB |
Output is correct |
| 73 |
Correct |
37 ms |
8748 KB |
Output is correct |
| 74 |
Incorrect |
54 ms |
8808 KB |
Output isn't correct |
| 75 |
Incorrect |
51 ms |
8732 KB |
Output isn't correct |
| 76 |
Incorrect |
47 ms |
8800 KB |
Output isn't correct |
| 77 |
Incorrect |
50 ms |
8808 KB |
Output isn't correct |
| 78 |
Correct |
60 ms |
7484 KB |
Output is correct |
| 79 |
Incorrect |
39 ms |
7040 KB |
Output isn't correct |
| 80 |
Incorrect |
47 ms |
7128 KB |
Output isn't correct |
| 81 |
Incorrect |
53 ms |
7368 KB |
Output isn't correct |
| 82 |
Incorrect |
58 ms |
7248 KB |
Output isn't correct |
| 83 |
Incorrect |
72 ms |
7460 KB |
Output isn't correct |
| 84 |
Incorrect |
55 ms |
7244 KB |
Output isn't correct |
| 85 |
Incorrect |
57 ms |
7392 KB |
Output isn't correct |
| 86 |
Incorrect |
58 ms |
7396 KB |
Output isn't correct |
| 87 |
Incorrect |
55 ms |
7320 KB |
Output isn't correct |
| 88 |
Incorrect |
74 ms |
7584 KB |
Output isn't correct |
| 89 |
Incorrect |
77 ms |
7380 KB |
Output isn't correct |
| 90 |
Incorrect |
70 ms |
7444 KB |
Output isn't correct |
| 91 |
Incorrect |
76 ms |
7544 KB |
Output isn't correct |
| 92 |
Incorrect |
89 ms |
7576 KB |
Output isn't correct |
