#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
using ll = long long;
using ii = pair<int, int>;
const int N = 1e6+5;
const int INF = 1e9;
int d[1000][1000],m[1000][1000],n,s;
char a[1000][1000];
int dx[4]={1,0,0,-1};
int dy[4]={0,1,-1,0};
ii pos,h;
bool bfs(int x) {
queue<ii> q;
q.push(pos);
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++) {
m[i][j]=0;
}
}
while(!q.empty()) {
ii u=q.front();
q.pop();
for(int i=0;i<4;i++) {
ii v={u.fi+dx[i],u.se+dy[i]};
if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
if(m[v.fi][v.se]==0 && a[v.fi][v.se]!='T' && d[v.fi][v.se]-x>=(m[u.fi][u.se]+1)/s && a[v.fi][v.se]!='M') {
m[v.fi][v.se]=m[u.fi][u.se]+1;
q.push(v);
}
}
}
if(m[h.fi][h.se]>0) return 1; else return 0;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
queue<ii> q;
cin >> n >> s;
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++) {
cin >> a[i][j];
if(a[i][j]=='H') {
q.push({i,j});
}
if(a[i][j]=='M') pos={i,j};
if(a[i][j]=='D') h={i,j};
}
}
while(!q.empty()) {
ii u=q.front();
q.pop();
for(int i=0;i<4;i++) {
ii v={u.fi+dx[i],u.se+dy[i]};
if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
if(d[v.fi][v.se]==0 && a[v.fi][v.se]!='T' && a[v.fi][v.se]!='H') {
d[v.fi][v.se]=d[u.fi][u.se]+1;
q.push(v);
}
}
}
int l=0,r=100,ans=-1;
while(l<=r) {
int m=(l+r)/2;
if(bfs(m)) {
ans=m;
l=m+1;
}
else {
r=m-1;
}
}
cout << ans;
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:46:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
46 | freopen("in.txt", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
mecho.cpp:47:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
47 | freopen("out.txt", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
2 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
3 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
4 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
5 |
Incorrect |
2 ms |
532 KB |
Output isn't correct |
6 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
7 |
Incorrect |
2 ms |
460 KB |
Output isn't correct |
8 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
10 |
Incorrect |
2 ms |
600 KB |
Output isn't correct |
11 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
12 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
13 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
14 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
15 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
16 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
17 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
18 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
19 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
20 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
21 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
22 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
23 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
24 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
25 |
Incorrect |
1 ms |
424 KB |
Output isn't correct |
26 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
27 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
28 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
29 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
30 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
31 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
32 |
Incorrect |
2 ms |
540 KB |
Output isn't correct |
33 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
34 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
35 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
36 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
37 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
38 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
39 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
40 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
41 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
42 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
43 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
44 |
Incorrect |
2 ms |
532 KB |
Output isn't correct |
45 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
46 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
47 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
48 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
49 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
50 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
51 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
52 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
53 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
54 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
55 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
56 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
57 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
58 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
59 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
60 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
61 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
62 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
63 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
64 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
65 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
66 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
67 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
68 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
69 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
70 |
Incorrect |
2 ms |
600 KB |
Output isn't correct |
71 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
72 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
73 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
74 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
75 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
76 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
77 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
78 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
79 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
80 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
81 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
82 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
83 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
84 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
85 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
86 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
87 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
88 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
89 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
90 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
91 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
92 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |