| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 789661 |
2023-07-21T16:31:29 Z |
phongcd |
Mecho (IOI09_mecho) |
C++17 |
|
277 ms |
65540 KB |
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ii pair <int, int>
#define ill pair <ll, ll>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define file "test"
using namespace std;
const ll N = 8e2 + 2;
const ll MOD = 1e9;
const ll INF = 1e18;
const ll base = 311;
const int BLOCK_SIZE = 2000;
int n, s;
ii start, target, d[N][N];
char a[N][N];
int mtime[N][N];
int dx[4] = {-1, 1, 0, 0};
int dy[4] = {0, 0, -1, 1};
void addstep(ii &a) {
a.se += 1;
if (a.se == s) a.fi ++, a.se = 0;
}
bool cmp(ii a, ii b) {
if (a.fi != b.fi) return a.fi < b.fi;
return a.se < b.se;
}
bool check(int x) {
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++) d[i][j] = {2e9, 0};
queue <ii> h;
h.push(start);
d[start.fi][start.se] = {x + 1, 0};
while (!h.empty()) {
auto [x, y] = h.front(); h.pop();
ii res = d[x][y];
addstep(res);
for (int j = 0; j <= 3; j ++) {
int u = x + dx[j];
int v = y + dy[j];
if (a[u][v] == 'G' && res.fi <= mtime[u][v] && !cmp(d[u][v], res)) {
h.push({u, v});
d[u][v] = res;
}
}
}
return d[target.fi][target.se].fi != 2e9;
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> s;
queue <ii> bee;
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++) {
cin >> a[i][j];
mtime[i][j] = 2e9;
if (a[i][j] == 'H')
bee.push({i, j}), mtime[i][j] = 0;
if (a[i][j] == 'M')
a[i][j] = 'G', start = {i, j};
if (a[i][j] == 'D')
a[i][j] = 'G', target = {i, j};
}
while (!bee.empty()) {
auto [x, y] = bee.front(); bee.pop();
int res = mtime[x][y] + 1;
for (int j = 0; j <= 3; j ++) {
int u = x + dx[j];
int v = y + dy[j];
if (a[u][v] == 'G' && mtime[u][v] > res) {
bee.push({u, v});
mtime[u][v] = res;
}
}
}
int l = 0, r = 2e3;
while (l < r) {
int mid = l + (r - l + 1) / 2;
if (check(mid)) l = mid;
else r = mid - 1;
}
cout << (check(l) ? l : -1);
}
/*
/\_/\ zzZ
(= -_-)
/ >u >u
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 7 |
Runtime error |
179 ms |
65536 KB |
Execution killed with signal 9 |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 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 |
852 KB |
Output isn't correct |
| 13 |
Runtime error |
277 ms |
65536 KB |
Execution killed with signal 9 |
| 14 |
Runtime error |
268 ms |
65536 KB |
Execution killed with signal 9 |
| 15 |
Correct |
0 ms |
468 KB |
Output is correct |
| 16 |
Correct |
0 ms |
468 KB |
Output is correct |
| 17 |
Correct |
0 ms |
468 KB |
Output is correct |
| 18 |
Correct |
0 ms |
468 KB |
Output is correct |
| 19 |
Correct |
0 ms |
468 KB |
Output is correct |
| 20 |
Correct |
1 ms |
468 KB |
Output is correct |
| 21 |
Correct |
1 ms |
596 KB |
Output is correct |
| 22 |
Correct |
1 ms |
596 KB |
Output is correct |
| 23 |
Correct |
1 ms |
724 KB |
Output is correct |
| 24 |
Correct |
1 ms |
724 KB |
Output is correct |
| 25 |
Correct |
1 ms |
724 KB |
Output is correct |
| 26 |
Correct |
1 ms |
852 KB |
Output is correct |
| 27 |
Incorrect |
1 ms |
852 KB |
Output isn't correct |
| 28 |
Correct |
1 ms |
852 KB |
Output is correct |
| 29 |
Incorrect |
1 ms |
852 KB |
Output isn't correct |
| 30 |
Correct |
1 ms |
852 KB |
Output is correct |
| 31 |
Incorrect |
1 ms |
980 KB |
Output isn't correct |
| 32 |
Correct |
1 ms |
980 KB |
Output is correct |
| 33 |
Incorrect |
11 ms |
3796 KB |
Output isn't correct |
| 34 |
Incorrect |
13 ms |
3856 KB |
Output isn't correct |
| 35 |
Runtime error |
190 ms |
65536 KB |
Execution killed with signal 9 |
| 36 |
Incorrect |
13 ms |
4420 KB |
Output isn't correct |
| 37 |
Incorrect |
20 ms |
4416 KB |
Output isn't correct |
| 38 |
Runtime error |
195 ms |
65536 KB |
Execution killed with signal 9 |
| 39 |
Incorrect |
17 ms |
4820 KB |
Output isn't correct |
| 40 |
Incorrect |
21 ms |
4932 KB |
Output isn't correct |
| 41 |
Runtime error |
182 ms |
65536 KB |
Execution killed with signal 9 |
| 42 |
Incorrect |
20 ms |
5436 KB |
Output isn't correct |
| 43 |
Incorrect |
25 ms |
5332 KB |
Output isn't correct |
| 44 |
Runtime error |
182 ms |
65536 KB |
Execution killed with signal 9 |
| 45 |
Incorrect |
25 ms |
5844 KB |
Output isn't correct |
| 46 |
Incorrect |
31 ms |
5956 KB |
Output isn't correct |
| 47 |
Runtime error |
178 ms |
65536 KB |
Execution killed with signal 9 |
| 48 |
Incorrect |
29 ms |
6396 KB |
Output isn't correct |
| 49 |
Incorrect |
37 ms |
6452 KB |
Output isn't correct |
| 50 |
Runtime error |
207 ms |
65536 KB |
Execution killed with signal 9 |
| 51 |
Incorrect |
34 ms |
6948 KB |
Output isn't correct |
| 52 |
Incorrect |
42 ms |
6868 KB |
Output isn't correct |
| 53 |
Runtime error |
213 ms |
65540 KB |
Execution killed with signal 9 |
| 54 |
Incorrect |
38 ms |
7380 KB |
Output isn't correct |
| 55 |
Incorrect |
48 ms |
7380 KB |
Output isn't correct |
| 56 |
Runtime error |
180 ms |
65536 KB |
Execution killed with signal 9 |
| 57 |
Incorrect |
45 ms |
7924 KB |
Output isn't correct |
| 58 |
Incorrect |
71 ms |
7964 KB |
Output isn't correct |
| 59 |
Runtime error |
186 ms |
65536 KB |
Execution killed with signal 9 |
| 60 |
Incorrect |
51 ms |
8420 KB |
Output isn't correct |
| 61 |
Incorrect |
65 ms |
8436 KB |
Output isn't correct |
| 62 |
Runtime error |
191 ms |
65536 KB |
Execution killed with signal 9 |
| 63 |
Correct |
94 ms |
8576 KB |
Output is correct |
| 64 |
Correct |
142 ms |
8404 KB |
Output is correct |
| 65 |
Correct |
140 ms |
8484 KB |
Output is correct |
| 66 |
Correct |
123 ms |
8488 KB |
Output is correct |
| 67 |
Correct |
98 ms |
8480 KB |
Output is correct |
| 68 |
Correct |
44 ms |
8512 KB |
Output is correct |
| 69 |
Correct |
45 ms |
8528 KB |
Output is correct |
| 70 |
Correct |
37 ms |
8504 KB |
Output is correct |
| 71 |
Correct |
32 ms |
8496 KB |
Output is correct |
| 72 |
Incorrect |
29 ms |
8524 KB |
Output isn't correct |
| 73 |
Runtime error |
218 ms |
65536 KB |
Execution killed with signal 9 |
| 74 |
Runtime error |
185 ms |
65536 KB |
Execution killed with signal 9 |
| 75 |
Runtime error |
180 ms |
65536 KB |
Execution killed with signal 9 |
| 76 |
Runtime error |
176 ms |
65536 KB |
Execution killed with signal 9 |
| 77 |
Runtime error |
182 ms |
65536 KB |
Execution killed with signal 9 |
| 78 |
Runtime error |
179 ms |
65536 KB |
Execution killed with signal 9 |
| 79 |
Runtime error |
177 ms |
65536 KB |
Execution killed with signal 9 |
| 80 |
Runtime error |
187 ms |
65536 KB |
Execution killed with signal 9 |
| 81 |
Runtime error |
181 ms |
65536 KB |
Execution killed with signal 9 |
| 82 |
Runtime error |
181 ms |
65536 KB |
Execution killed with signal 9 |
| 83 |
Runtime error |
184 ms |
65536 KB |
Execution killed with signal 9 |
| 84 |
Runtime error |
185 ms |
65536 KB |
Execution killed with signal 9 |
| 85 |
Runtime error |
183 ms |
65536 KB |
Execution killed with signal 9 |
| 86 |
Runtime error |
181 ms |
65536 KB |
Execution killed with signal 9 |
| 87 |
Runtime error |
188 ms |
65536 KB |
Execution killed with signal 9 |
| 88 |
Runtime error |
191 ms |
65536 KB |
Execution killed with signal 9 |
| 89 |
Runtime error |
179 ms |
65536 KB |
Execution killed with signal 9 |
| 90 |
Runtime error |
182 ms |
65536 KB |
Execution killed with signal 9 |
| 91 |
Runtime error |
182 ms |
65536 KB |
Execution killed with signal 9 |
| 92 |
Runtime error |
193 ms |
65536 KB |
Execution killed with signal 9 |
