| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 862428 |
2023-10-18T08:17:02 Z |
dosts |
Mecho (IOI09_mecho) |
C++14 |
|
160 ms |
11392 KB |
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define sp << " " <<
#define int long long
#define vi vector<int>
#define pb push_back
#define F(xxx,yyy) for (int xxx=1;xxx<=yyy;xxx++)
#define pii pair<int,int>
#define ordered_set tree<pii, null_type, less<pii>, rb_tree_tag, tree_order_statistics_node_update>
void solve() {
int n,k;
cin >> n >> k;
char grid[n+1][n+1];
queue<pii> q;
vector<vi> bee(n+1,vi(n+1,-1));
int sx,sy,hx,hy;
F(i,n) {
string s;
cin >> s;
F(j,n) {
grid[i][j] = s[j-1];
if (s[j-1] == 'H') {
q.push({i,j});
bee[i][j] = 0;
}
if (s[j-1] == 'D') {
hx = i;
hy = j;
}
if (s[j-1] == 'M') {
sx = i;
sy = j;
}
}
}
vi dx = {1,0,-1,0};
vi dy = {0,1,0,-1};
while (!q.empty()) {
pii f = q.front();
q.pop();
int x = f.first;
int y = f.second;
for (int i=0;i<4;i++) {
int gx = x+dx[i];
int gy = y+dy[i];
if (gx < 1 || gx > n) continue;
if (gy < 1 || gy > n) continue;
if (grid[gx][gy] == 'T') continue;
if (grid[gx][gy] == 'D') continue;
if (bee[gx][gy] != -1) continue;
bee[gx][gy] = bee[x][y]+1;
q.push({gx,gy});
}
}
int l = 0;
int r = 1e9;
while (l<=r) {
int w = (l+r) >> 1;
if (w >= bee[sx][sy]) {
r = w-1;
continue;
}
vector<vi> dist(n+1,vi(n+1,-1));
dist[sx][sy] = 0;
q.push({sx,sy});
while (!q.empty()) {
pii f = q.front();
q.pop();
int x = f.first;
int y = f.second;
for (int i=0;i<4;i++) {
int gx = x+dx[i];
int gy = y+dy[i];
if (gx < 1 || gx > n) continue;
if (gy < 1 || gy > n) continue;
if (grid[gx][gy] == 'T') continue;
if (dist[gx][gy] != -1) continue;
if (bee[gx][gy] != -1 && bee[gx][gy] < w+(dist[x][y]/k)+1) continue;
dist[gx][gy] = dist[x][y]+1;
q.push({gx,gy});
}
}
if (dist[hx][hy]!=-1) l = w+1;
else r = w-1;
}
cout << r << endl;
}
signed main() {
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int t = 1;
//cin >> t;
while (t --> 0) solve();
}
Compilation message
mecho.cpp: In function 'void solve()':
mecho.cpp:63:22: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized]
63 | if (w >= bee[sx][sy]) {
| ^
mecho.cpp:63:18: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized]
63 | if (w >= bee[sx][sy]) {
| ^
mecho.cpp:87:14: warning: 'hx' may be used uninitialized in this function [-Wmaybe-uninitialized]
87 | if (dist[hx][hy]!=-1) l = w+1;
| ^
mecho.cpp:87:18: warning: 'hy' may be used uninitialized in this function [-Wmaybe-uninitialized]
87 | if (dist[hx][hy]!=-1) l = w+1;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
91 ms |
11244 KB |
Output is correct |
| 8 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 30 |
Correct |
0 ms |
348 KB |
Output is correct |
| 31 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 32 |
Correct |
1 ms |
344 KB |
Output is correct |
| 33 |
Incorrect |
7 ms |
2540 KB |
Output isn't correct |
| 34 |
Correct |
7 ms |
2528 KB |
Output is correct |
| 35 |
Correct |
17 ms |
2504 KB |
Output is correct |
| 36 |
Incorrect |
6 ms |
3092 KB |
Output isn't correct |
| 37 |
Correct |
6 ms |
3152 KB |
Output is correct |
| 38 |
Correct |
26 ms |
3168 KB |
Output is correct |
| 39 |
Incorrect |
8 ms |
3868 KB |
Output isn't correct |
| 40 |
Correct |
8 ms |
3844 KB |
Output is correct |
| 41 |
Correct |
30 ms |
3912 KB |
Output is correct |
| 42 |
Incorrect |
8 ms |
4636 KB |
Output isn't correct |
| 43 |
Correct |
7 ms |
4636 KB |
Output is correct |
| 44 |
Correct |
41 ms |
4640 KB |
Output is correct |
| 45 |
Incorrect |
14 ms |
5572 KB |
Output isn't correct |
| 46 |
Correct |
11 ms |
5548 KB |
Output is correct |
| 47 |
Correct |
55 ms |
5584 KB |
Output is correct |
| 48 |
Incorrect |
16 ms |
6560 KB |
Output isn't correct |
| 49 |
Correct |
17 ms |
6544 KB |
Output is correct |
| 50 |
Correct |
60 ms |
6528 KB |
Output is correct |
| 51 |
Incorrect |
19 ms |
7604 KB |
Output isn't correct |
| 52 |
Correct |
20 ms |
7588 KB |
Output is correct |
| 53 |
Correct |
87 ms |
7856 KB |
Output is correct |
| 54 |
Incorrect |
25 ms |
8792 KB |
Output isn't correct |
| 55 |
Correct |
27 ms |
8716 KB |
Output is correct |
| 56 |
Correct |
86 ms |
8692 KB |
Output is correct |
| 57 |
Incorrect |
22 ms |
9968 KB |
Output isn't correct |
| 58 |
Correct |
16 ms |
9908 KB |
Output is correct |
| 59 |
Correct |
91 ms |
9904 KB |
Output is correct |
| 60 |
Incorrect |
25 ms |
11244 KB |
Output isn't correct |
| 61 |
Correct |
28 ms |
11256 KB |
Output is correct |
| 62 |
Correct |
116 ms |
11212 KB |
Output is correct |
| 63 |
Correct |
107 ms |
11204 KB |
Output is correct |
| 64 |
Correct |
160 ms |
11212 KB |
Output is correct |
| 65 |
Correct |
152 ms |
11188 KB |
Output is correct |
| 66 |
Incorrect |
117 ms |
11212 KB |
Output isn't correct |
| 67 |
Correct |
95 ms |
11212 KB |
Output is correct |
| 68 |
Correct |
48 ms |
11220 KB |
Output is correct |
| 69 |
Correct |
47 ms |
11232 KB |
Output is correct |
| 70 |
Correct |
35 ms |
11228 KB |
Output is correct |
| 71 |
Correct |
40 ms |
11260 KB |
Output is correct |
| 72 |
Correct |
30 ms |
11260 KB |
Output is correct |
| 73 |
Correct |
40 ms |
11252 KB |
Output is correct |
| 74 |
Correct |
58 ms |
11260 KB |
Output is correct |
| 75 |
Correct |
63 ms |
11292 KB |
Output is correct |
| 76 |
Correct |
56 ms |
11268 KB |
Output is correct |
| 77 |
Correct |
59 ms |
11188 KB |
Output is correct |
| 78 |
Correct |
66 ms |
11136 KB |
Output is correct |
| 79 |
Correct |
57 ms |
11324 KB |
Output is correct |
| 80 |
Correct |
59 ms |
11288 KB |
Output is correct |
| 81 |
Correct |
67 ms |
11392 KB |
Output is correct |
| 82 |
Correct |
56 ms |
11184 KB |
Output is correct |
| 83 |
Correct |
73 ms |
11232 KB |
Output is correct |
| 84 |
Correct |
77 ms |
11232 KB |
Output is correct |
| 85 |
Correct |
70 ms |
11252 KB |
Output is correct |
| 86 |
Correct |
70 ms |
11248 KB |
Output is correct |
| 87 |
Correct |
71 ms |
11140 KB |
Output is correct |
| 88 |
Correct |
78 ms |
11248 KB |
Output is correct |
| 89 |
Correct |
82 ms |
11352 KB |
Output is correct |
| 90 |
Correct |
79 ms |
11248 KB |
Output is correct |
| 91 |
Correct |
74 ms |
11244 KB |
Output is correct |
| 92 |
Correct |
76 ms |
11208 KB |
Output is correct |
