| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 607338 |
2022-07-26T15:28:46 Z |
beaboss |
Mecho (IOI09_mecho) |
C++14 |
|
435 ms |
21428 KB |
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
ll n, s;
cin >> n>> s;
vector<vector<char> > grid(n, vector<char>(n));
queue<pair<ll ,ll> > q1;
queue<pair<ll ,ll> > q2;
pair<ll ,ll> home;
pair<ll ,ll> start;
vector<vector<ll> > hdist(n, vector<ll>(n, -1));
for (ll i = 0; i < n; i++) for (ll j = 0; j < n; j++) {
cin >> grid[i][j];
if (grid[i][j] == 'H') {
q1.push({i, j});
hdist[i][j] = 0;
}
else if (grid[i][j] == 'M') {
// q2.push({i, j});
start = {i, j};
}
else if (grid[i][j] == 'D') home = {i, j};
}
vector<ll> dx = {1, -1, 0, 0};
vector<ll> dy = {0, 0, -1, 1};
while (!q1.empty() && hdist[home.first][home.second] == -1) {
pair<ll, ll> curr = q1.front();
q1.pop();
for (ll i = 0; i < 4; i++) {
ll x = curr.first + dx[i];
ll y = curr.second + dy[i];
if (x >= 0 && x < n && y >= 0 && y < n) {
if (hdist[x][y] == -1 && (grid[x][y] == 'G' || grid[x][y] == 'D')) {
hdist[x][y] = hdist[curr.first][curr.second] + s;
q1.push({x, y});
}
}
}
}
vector<vector<pair<ll, ll> > > parent(n, vector<pair<ll, ll> >(n, {-1, -1}));
ll hi = n*n;
ll lo = 0;
while (hi > lo || (hi == 0 && lo == 0)) {
ll mid = (hi + lo + 1)/2;
// cout << hi << lo << endl;
vector<vector<ll> > mdist(n, vector<ll>(n, -1));
mdist[start.first][start.second] = mid * s;
q2.push(start);
// cout << hdist[3][1] << endl;
while (!q2.empty()) {
pair<ll, ll> curr = q2.front();
// cout << mdist[curr.first][curr.second] << endl;
q2.pop();
for (ll i = 0; i < 4; i++) {
ll x = curr.first + dx[i];
ll y = curr.second + dy[i];
if (x >= 0 && x < n && y >= 0 && y < n) {
if (mdist[x][y] == -1 && (grid[x][y] == 'G' || grid[x][y] == 'D') && (hdist[x][y] > mdist[curr.first][curr.second] + 1 || hdist[x][y ] == -1)) {
mdist[x][y] = mdist[curr.first][curr.second] + 1;
q2.push({x, y});
parent[x][y] = {curr.first, curr.second};
}
}
}
}
if (mdist[home.first][home.second] != -1) {
lo = mid;
if (hi == 0 && lo == 0) break;
} else {
hi = mid - 1;
}
}
// ll ans = 100000000;
// pair<ll ,ll> current = home;
// // cout << mdist[home.first][home.second] << endl;
// if (mdist[home.first][home.second] == -1) {
// cout << -1 << endl;
// return 0;
// }
// while (current != start) {
// ll x = current.first;
// ll y = current.second;
// if (hdist[x][y] != -1) {
// // cout << x << y << hdist[x][y] << endl;
// ans = min(ans, hdist[x][y]-mdist[x][y]);
// }
// current = parent[x][y];
// }
// for (ll i = 0; i < 4; i++) {
// ll x = home.first + dx[i];
// ll y = home.second + dy[i];
// if (x >= 0 && x < n && y >= 0 && y < n && grid[x][y] != 'T') {
// ans = max(hdist[x][y] - mdist[x][y], ans);
// cout << mdist[x][y] << hdist[x][y] << x << y << endl;
// }
// }
cout << hi << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 7 |
Incorrect |
296 ms |
21428 KB |
Output isn't correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
320 KB |
Output is correct |
| 25 |
Correct |
1 ms |
340 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
2 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
19 ms |
4308 KB |
Output is correct |
| 34 |
Correct |
19 ms |
4336 KB |
Output is correct |
| 35 |
Correct |
65 ms |
4328 KB |
Output is correct |
| 36 |
Correct |
21 ms |
5524 KB |
Output is correct |
| 37 |
Correct |
26 ms |
5516 KB |
Output is correct |
| 38 |
Correct |
95 ms |
5548 KB |
Output is correct |
| 39 |
Correct |
30 ms |
6868 KB |
Output is correct |
| 40 |
Correct |
38 ms |
6940 KB |
Output is correct |
| 41 |
Correct |
115 ms |
6896 KB |
Output is correct |
| 42 |
Correct |
35 ms |
8500 KB |
Output is correct |
| 43 |
Correct |
41 ms |
8508 KB |
Output is correct |
| 44 |
Correct |
155 ms |
8452 KB |
Output is correct |
| 45 |
Correct |
49 ms |
10204 KB |
Output is correct |
| 46 |
Correct |
50 ms |
10184 KB |
Output is correct |
| 47 |
Correct |
186 ms |
10160 KB |
Output is correct |
| 48 |
Correct |
50 ms |
12124 KB |
Output is correct |
| 49 |
Correct |
59 ms |
12172 KB |
Output is correct |
| 50 |
Correct |
253 ms |
12012 KB |
Output is correct |
| 51 |
Correct |
63 ms |
14140 KB |
Output is correct |
| 52 |
Correct |
61 ms |
14068 KB |
Output is correct |
| 53 |
Correct |
267 ms |
14092 KB |
Output is correct |
| 54 |
Correct |
77 ms |
16312 KB |
Output is correct |
| 55 |
Correct |
89 ms |
16304 KB |
Output is correct |
| 56 |
Correct |
370 ms |
16244 KB |
Output is correct |
| 57 |
Correct |
91 ms |
18624 KB |
Output is correct |
| 58 |
Correct |
94 ms |
18692 KB |
Output is correct |
| 59 |
Correct |
357 ms |
18612 KB |
Output is correct |
| 60 |
Correct |
95 ms |
21164 KB |
Output is correct |
| 61 |
Correct |
106 ms |
21180 KB |
Output is correct |
| 62 |
Correct |
435 ms |
21136 KB |
Output is correct |
| 63 |
Correct |
232 ms |
21180 KB |
Output is correct |
| 64 |
Correct |
338 ms |
21148 KB |
Output is correct |
| 65 |
Correct |
274 ms |
21172 KB |
Output is correct |
| 66 |
Correct |
240 ms |
21200 KB |
Output is correct |
| 67 |
Correct |
252 ms |
21144 KB |
Output is correct |
| 68 |
Correct |
147 ms |
21204 KB |
Output is correct |
| 69 |
Correct |
133 ms |
21236 KB |
Output is correct |
| 70 |
Correct |
117 ms |
21220 KB |
Output is correct |
| 71 |
Correct |
112 ms |
21184 KB |
Output is correct |
| 72 |
Incorrect |
127 ms |
21136 KB |
Output isn't correct |
| 73 |
Incorrect |
274 ms |
21248 KB |
Output isn't correct |
| 74 |
Correct |
187 ms |
21288 KB |
Output is correct |
| 75 |
Correct |
225 ms |
21240 KB |
Output is correct |
| 76 |
Correct |
222 ms |
21216 KB |
Output is correct |
| 77 |
Correct |
231 ms |
21280 KB |
Output is correct |
| 78 |
Correct |
326 ms |
21244 KB |
Output is correct |
| 79 |
Correct |
191 ms |
21244 KB |
Output is correct |
| 80 |
Correct |
189 ms |
21232 KB |
Output is correct |
| 81 |
Correct |
251 ms |
21208 KB |
Output is correct |
| 82 |
Correct |
199 ms |
21248 KB |
Output is correct |
| 83 |
Correct |
329 ms |
21212 KB |
Output is correct |
| 84 |
Correct |
303 ms |
21224 KB |
Output is correct |
| 85 |
Correct |
272 ms |
21240 KB |
Output is correct |
| 86 |
Correct |
329 ms |
21332 KB |
Output is correct |
| 87 |
Correct |
310 ms |
21304 KB |
Output is correct |
| 88 |
Correct |
396 ms |
21248 KB |
Output is correct |
| 89 |
Correct |
327 ms |
21228 KB |
Output is correct |
| 90 |
Correct |
372 ms |
21296 KB |
Output is correct |
| 91 |
Correct |
310 ms |
21260 KB |
Output is correct |
| 92 |
Correct |
296 ms |
21220 KB |
Output is correct |
