| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 103684 |
2019-04-02T04:23:25 Z |
turbat |
Mecho (IOI09_mecho) |
C++14 |
|
805 ms |
3976 KB |
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
using pii = pair<int, int>;
using vi = vector <int>;
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define ll long long
#define ook order_of_key
#define fbo find_by_order
#define sq(x) (x) * (x)
#define N 805
int x, y, posx, posy, n, s;
int ax[4] = {0, 0, 1, -1};
int ay[4] = {1, -1, 0, 0};
string st[N];
queue <pii> que, q, bfs, mecho;
bool used[N][N], vis[N][N], pass[N][N];
bool check(int curx, int cury){
if (curx < n && cury < n && curx >= 0 && cury >= 0 && !used[curx][cury]) return true;
return false;
}
bool can(int time){;
que = q;
mecho.push(mp(x, y));
memset(pass, 0, sizeof pass);
pass[x][y] = 1;
for (int i = 0;i < n;i++)
for (int j = 0;j < n;j++)
used[i][j] = vis[i][j];
while (time--){
bfs = que;
while(!que.empty()) que.pop();
while (!bfs.empty()){
pii pos = bfs.front();
bfs.pop();
for (int i = 0;i < 4;i++)
if (check(pos.F + ax[i], pos.S + ay[i]) && st[pos.F + ax[i]][pos.S + ay[i]] != 'T')
que.push(mp(pos.F + ax[i], pos.S + ay[i])), used[pos.F + ax[i]][pos.S + ay[i]] = 1;
}
}
while (!used[posx][posy]){
int tmp = s;
while (tmp--){
bfs = mecho;
while (!mecho.empty()) mecho.pop();
while (!bfs.empty()){
pii pos = bfs.front();
bfs.pop();
if (pos.F == posx && pos.S == posy) return true;
if (!used[pos.F][pos.S])
for (int i = 0;i < 4;i++)
if (check(pos.F + ax[i], pos.S + ay[i]) && st[pos.F + ax[i]][pos.S + ay[i]] != 'T'
&& !pass[pos.F + ax[i]][pos.S + ay[i]])
mecho.push(mp(pos.F + ax[i], pos.S + ay[i])), pass[pos.F + ax[i]][pos.S + ay[i]] = 1;
}
}
bfs = que;
while (!que.empty()) que.pop();
while (!bfs.empty()){
pii pos = bfs.front();
bfs.pop();
for (int i = 0;i < 4;i++)
if (check(pos.F + ax[i], pos.S + ay[i]) && st[pos.F + ax[i]][pos.S + ay[i]] != 'T')
que.push(mp(pos.F + ax[i], pos.S + ay[i])), used[pos.F + ax[i]][pos.S + ay[i]] = 1;
}
}
return false;
}
int main (){
cin >> n>> s;
for (int i = 0;i < n;i++)
cin >> st[i];
for (int i = 0;i < n;i++)
for (int j = 0;j < n;j++){
if (st[i][j] == 'M') x = i, y = j;
if (st[i][j] == 'D') posx = i, posy = j;
if (st[i][j] == 'H') q.push(mp(i, j)), vis[i][j] = 1;
}
int l = 0, r = n * n;
while (l != r){
int mid = (l + r + 1) / 2;
if (can(mid)) l = mid;
else r = mid - 1;
}
if (can(l)) cout << l<< endl;
else cout << -1 << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 2 |
Incorrect |
3 ms |
1024 KB |
Output isn't correct |
| 3 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 4 |
Incorrect |
3 ms |
1024 KB |
Output isn't correct |
| 5 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
1024 KB |
Output isn't correct |
| 7 |
Incorrect |
376 ms |
3096 KB |
Output isn't correct |
| 8 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 9 |
Correct |
4 ms |
1024 KB |
Output is correct |
| 10 |
Correct |
4 ms |
996 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 12 |
Incorrect |
4 ms |
1152 KB |
Output isn't correct |
| 13 |
Correct |
6 ms |
1024 KB |
Output is correct |
| 14 |
Correct |
5 ms |
1152 KB |
Output is correct |
| 15 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 17 |
Correct |
4 ms |
1024 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 19 |
Correct |
4 ms |
1024 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1024 KB |
Output is correct |
| 21 |
Correct |
5 ms |
1024 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1100 KB |
Output is correct |
| 23 |
Correct |
7 ms |
1024 KB |
Output is correct |
| 24 |
Correct |
4 ms |
1024 KB |
Output is correct |
| 25 |
Correct |
6 ms |
1024 KB |
Output is correct |
| 26 |
Correct |
5 ms |
1124 KB |
Output is correct |
| 27 |
Correct |
9 ms |
1024 KB |
Output is correct |
| 28 |
Correct |
5 ms |
1024 KB |
Output is correct |
| 29 |
Correct |
7 ms |
1152 KB |
Output is correct |
| 30 |
Correct |
7 ms |
1024 KB |
Output is correct |
| 31 |
Correct |
6 ms |
1024 KB |
Output is correct |
| 32 |
Correct |
6 ms |
1024 KB |
Output is correct |
| 33 |
Correct |
101 ms |
1516 KB |
Output is correct |
| 34 |
Correct |
50 ms |
1536 KB |
Output is correct |
| 35 |
Incorrect |
34 ms |
1528 KB |
Output isn't correct |
| 36 |
Correct |
168 ms |
1656 KB |
Output is correct |
| 37 |
Correct |
69 ms |
1664 KB |
Output is correct |
| 38 |
Incorrect |
65 ms |
1536 KB |
Output isn't correct |
| 39 |
Correct |
224 ms |
1536 KB |
Output is correct |
| 40 |
Correct |
90 ms |
1664 KB |
Output is correct |
| 41 |
Incorrect |
53 ms |
1612 KB |
Output isn't correct |
| 42 |
Correct |
297 ms |
1792 KB |
Output is correct |
| 43 |
Correct |
168 ms |
2040 KB |
Output is correct |
| 44 |
Incorrect |
84 ms |
1920 KB |
Output isn't correct |
| 45 |
Correct |
420 ms |
1992 KB |
Output is correct |
| 46 |
Correct |
125 ms |
2048 KB |
Output is correct |
| 47 |
Incorrect |
117 ms |
2040 KB |
Output isn't correct |
| 48 |
Correct |
469 ms |
2048 KB |
Output is correct |
| 49 |
Correct |
150 ms |
2176 KB |
Output is correct |
| 50 |
Correct |
106 ms |
2048 KB |
Output is correct |
| 51 |
Correct |
433 ms |
2268 KB |
Output is correct |
| 52 |
Correct |
182 ms |
2320 KB |
Output is correct |
| 53 |
Incorrect |
121 ms |
2176 KB |
Output isn't correct |
| 54 |
Correct |
642 ms |
2176 KB |
Output is correct |
| 55 |
Correct |
226 ms |
2296 KB |
Output is correct |
| 56 |
Incorrect |
188 ms |
2296 KB |
Output isn't correct |
| 57 |
Correct |
591 ms |
2424 KB |
Output is correct |
| 58 |
Correct |
284 ms |
2476 KB |
Output is correct |
| 59 |
Incorrect |
190 ms |
2424 KB |
Output isn't correct |
| 60 |
Correct |
805 ms |
2524 KB |
Output is correct |
| 61 |
Correct |
285 ms |
2680 KB |
Output is correct |
| 62 |
Incorrect |
207 ms |
2480 KB |
Output isn't correct |
| 63 |
Correct |
567 ms |
2480 KB |
Output is correct |
| 64 |
Correct |
651 ms |
2596 KB |
Output is correct |
| 65 |
Correct |
533 ms |
2552 KB |
Output is correct |
| 66 |
Correct |
507 ms |
2432 KB |
Output is correct |
| 67 |
Correct |
526 ms |
2552 KB |
Output is correct |
| 68 |
Correct |
442 ms |
3072 KB |
Output is correct |
| 69 |
Correct |
432 ms |
3232 KB |
Output is correct |
| 70 |
Correct |
473 ms |
3192 KB |
Output is correct |
| 71 |
Correct |
538 ms |
3192 KB |
Output is correct |
| 72 |
Correct |
543 ms |
3064 KB |
Output is correct |
| 73 |
Correct |
378 ms |
3684 KB |
Output is correct |
| 74 |
Incorrect |
395 ms |
3836 KB |
Output isn't correct |
| 75 |
Incorrect |
385 ms |
3748 KB |
Output isn't correct |
| 76 |
Incorrect |
421 ms |
3728 KB |
Output isn't correct |
| 77 |
Correct |
441 ms |
3976 KB |
Output is correct |
| 78 |
Incorrect |
400 ms |
3432 KB |
Output isn't correct |
| 79 |
Correct |
392 ms |
3260 KB |
Output is correct |
| 80 |
Incorrect |
424 ms |
3464 KB |
Output isn't correct |
| 81 |
Incorrect |
464 ms |
3440 KB |
Output isn't correct |
| 82 |
Incorrect |
379 ms |
3252 KB |
Output isn't correct |
| 83 |
Incorrect |
395 ms |
3196 KB |
Output isn't correct |
| 84 |
Correct |
499 ms |
3264 KB |
Output is correct |
| 85 |
Incorrect |
446 ms |
3396 KB |
Output isn't correct |
| 86 |
Incorrect |
381 ms |
3180 KB |
Output isn't correct |
| 87 |
Incorrect |
380 ms |
3352 KB |
Output isn't correct |
| 88 |
Incorrect |
477 ms |
3220 KB |
Output isn't correct |
| 89 |
Correct |
403 ms |
3128 KB |
Output is correct |
| 90 |
Incorrect |
385 ms |
3208 KB |
Output isn't correct |
| 91 |
Correct |
421 ms |
3172 KB |
Output is correct |
| 92 |
Incorrect |
397 ms |
3300 KB |
Output isn't correct |
