#include <bits/stdc++.h>
using namespace std;
#define LIFESUCKS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define ll long long
#define ld long double
#define ar array
#include<cstdio>
#define vt vector
#include<fstream>
ifstream fin("piggyback.in");
ofstream fout("piggyback.out");
#include<fstream>
#define pb push_back
#define all(c) (c).begin(), (c).end()
#define fi first
#define se second
#define vt vector
using namespace std;
int n, s, sti, stj, eni, enj;
bool vis[801][801];
int dis[801][801];
int dis2[801][801];
char a[801][801];
bool bee = true;
const int x[4] = {1, -1, 0, 0};
const int y[4] = {0, 0, 1, -1};
bool check(int mid){
memset(vis, false, sizeof(vis));
memset(dis2, false, sizeof(dis2));
queue<pair<int, int>>q;
q.push({sti, stj});
vis[sti][stj] = true;
dis2[sti][stj] = 0;
while(!q.empty()){
auto now = q.front(); q.pop();
//cout << "mm";
for(int i = 0; i < 4; i++){
int cri = now.fi + x[i];
int crj = now.se + y[i];
if(cri < 0 || crj < 0 || cri >= n || crj >= n)continue;
if(!vis[cri][crj] &&(a[cri][crj] == 'G' || a[cri][crj] == 'D')){
// cout << "lol";
if(dis[cri][crj] > ceil((double)(dis2[now.fi][now.se] + 1) / (double)s) + mid){
vis[cri][crj] = true;
dis2[cri][crj] = dis2[now.fi][now.se] + 1;
if(a[cri][crj] == 'D')return(true);
q.push({cri, crj});
}
}
}
}
//cout << "\n";
return(false);
}
void bfs(){
memset(vis, false, sizeof(vis));
queue<pair<int, int>>q;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
if(a[i][j] == 'H'){
q.push({i, j});
vis[i][j] = true;
dis[i][j] = 0;
}
}
}
while(!q.empty()){
auto now = q.front(); q.pop();
for(int i = 0; i < 4; i++){
int cri = now.fi + x[i];
int crj = now.se + y[i];
if(cri < 0 || crj < 0 || cri >= n || crj >= n)continue;
if(!vis[cri][crj] && (a[cri][crj] == 'G' || a[cri][crj] == 'M')){
vis[cri][crj] = true;
dis[cri][crj] = dis[now.fi][now.se] + 1;
q.push({cri, crj});
}
}
}
}
int main(){
LIFESUCKS;
cin >> n >> s;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
dis[i][j] = 1e9;
cin >> a[i][j];
if(a[i][j] == 'M'){
sti = i, stj = j;
}if(a[i][j] == 'D'){
eni = i; enj = j;
}
}
}
//cout << sti << ' ' << stj << " ";
bfs();
int l = 0;
int r = 64000;
int ans = -1;
while(l <= r){
int mid = l + (r - l) / 2;
if(check(mid)){
ans = mid; l = mid + 1;
}else{
r = mid - 1;
}
}
cout << ans;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
3412 KB |
Output is correct |
| 2 |
Correct |
3 ms |
3412 KB |
Output is correct |
| 3 |
Correct |
3 ms |
3412 KB |
Output is correct |
| 4 |
Correct |
3 ms |
3412 KB |
Output is correct |
| 5 |
Incorrect |
3 ms |
3504 KB |
Output isn't correct |
| 6 |
Incorrect |
3 ms |
3412 KB |
Output isn't correct |
| 7 |
Incorrect |
95 ms |
6704 KB |
Output isn't correct |
| 8 |
Correct |
3 ms |
3412 KB |
Output is correct |
| 9 |
Incorrect |
3 ms |
3412 KB |
Output isn't correct |
| 10 |
Incorrect |
3 ms |
3496 KB |
Output isn't correct |
| 11 |
Incorrect |
3 ms |
3412 KB |
Output isn't correct |
| 12 |
Incorrect |
3 ms |
3668 KB |
Output isn't correct |
| 13 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 14 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 15 |
Correct |
3 ms |
3540 KB |
Output is correct |
| 16 |
Incorrect |
4 ms |
3540 KB |
Output isn't correct |
| 17 |
Correct |
4 ms |
3540 KB |
Output is correct |
| 18 |
Incorrect |
3 ms |
3540 KB |
Output isn't correct |
| 19 |
Correct |
3 ms |
3540 KB |
Output is correct |
| 20 |
Incorrect |
4 ms |
3540 KB |
Output isn't correct |
| 21 |
Correct |
3 ms |
3540 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
3632 KB |
Output isn't correct |
| 23 |
Correct |
3 ms |
3540 KB |
Output is correct |
| 24 |
Incorrect |
3 ms |
3668 KB |
Output isn't correct |
| 25 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 26 |
Incorrect |
3 ms |
3668 KB |
Output isn't correct |
| 27 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 28 |
Incorrect |
3 ms |
3668 KB |
Output isn't correct |
| 29 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 30 |
Incorrect |
3 ms |
3748 KB |
Output isn't correct |
| 31 |
Correct |
3 ms |
3668 KB |
Output is correct |
| 32 |
Incorrect |
3 ms |
3668 KB |
Output isn't correct |
| 33 |
Correct |
7 ms |
4820 KB |
Output is correct |
| 34 |
Incorrect |
9 ms |
4848 KB |
Output isn't correct |
| 35 |
Incorrect |
33 ms |
4824 KB |
Output isn't correct |
| 36 |
Incorrect |
8 ms |
5044 KB |
Output isn't correct |
| 37 |
Incorrect |
7 ms |
4948 KB |
Output isn't correct |
| 38 |
Incorrect |
29 ms |
5036 KB |
Output isn't correct |
| 39 |
Incorrect |
8 ms |
5240 KB |
Output isn't correct |
| 40 |
Incorrect |
9 ms |
5200 KB |
Output isn't correct |
| 41 |
Incorrect |
39 ms |
5176 KB |
Output isn't correct |
| 42 |
Incorrect |
10 ms |
5408 KB |
Output isn't correct |
| 43 |
Incorrect |
10 ms |
5432 KB |
Output isn't correct |
| 44 |
Incorrect |
47 ms |
5332 KB |
Output isn't correct |
| 45 |
Incorrect |
11 ms |
5588 KB |
Output isn't correct |
| 46 |
Incorrect |
16 ms |
5588 KB |
Output isn't correct |
| 47 |
Incorrect |
90 ms |
5616 KB |
Output isn't correct |
| 48 |
Incorrect |
16 ms |
5748 KB |
Output isn't correct |
| 49 |
Incorrect |
14 ms |
5716 KB |
Output isn't correct |
| 50 |
Incorrect |
67 ms |
5812 KB |
Output isn't correct |
| 51 |
Incorrect |
14 ms |
5972 KB |
Output isn't correct |
| 52 |
Incorrect |
15 ms |
5944 KB |
Output isn't correct |
| 53 |
Incorrect |
80 ms |
6004 KB |
Output isn't correct |
| 54 |
Incorrect |
18 ms |
6144 KB |
Output isn't correct |
| 55 |
Incorrect |
18 ms |
6192 KB |
Output isn't correct |
| 56 |
Incorrect |
112 ms |
6208 KB |
Output isn't correct |
| 57 |
Incorrect |
17 ms |
6348 KB |
Output isn't correct |
| 58 |
Incorrect |
20 ms |
6356 KB |
Output isn't correct |
| 59 |
Incorrect |
111 ms |
6400 KB |
Output isn't correct |
| 60 |
Incorrect |
22 ms |
6608 KB |
Output isn't correct |
| 61 |
Incorrect |
20 ms |
6584 KB |
Output isn't correct |
| 62 |
Incorrect |
127 ms |
6596 KB |
Output isn't correct |
| 63 |
Incorrect |
107 ms |
6596 KB |
Output isn't correct |
| 64 |
Incorrect |
206 ms |
6592 KB |
Output isn't correct |
| 65 |
Incorrect |
163 ms |
6600 KB |
Output isn't correct |
| 66 |
Correct |
140 ms |
6664 KB |
Output is correct |
| 67 |
Correct |
105 ms |
6572 KB |
Output is correct |
| 68 |
Incorrect |
53 ms |
6604 KB |
Output isn't correct |
| 69 |
Incorrect |
55 ms |
6612 KB |
Output isn't correct |
| 70 |
Incorrect |
43 ms |
6560 KB |
Output isn't correct |
| 71 |
Incorrect |
33 ms |
6572 KB |
Output isn't correct |
| 72 |
Correct |
31 ms |
6500 KB |
Output is correct |
| 73 |
Correct |
41 ms |
6884 KB |
Output is correct |
| 74 |
Incorrect |
65 ms |
6868 KB |
Output isn't correct |
| 75 |
Incorrect |
76 ms |
6804 KB |
Output isn't correct |
| 76 |
Incorrect |
62 ms |
6868 KB |
Output isn't correct |
| 77 |
Incorrect |
65 ms |
6868 KB |
Output isn't correct |
| 78 |
Correct |
75 ms |
6780 KB |
Output is correct |
| 79 |
Incorrect |
56 ms |
6780 KB |
Output isn't correct |
| 80 |
Incorrect |
90 ms |
6844 KB |
Output isn't correct |
| 81 |
Incorrect |
86 ms |
6796 KB |
Output isn't correct |
| 82 |
Incorrect |
65 ms |
6856 KB |
Output isn't correct |
| 83 |
Incorrect |
75 ms |
6808 KB |
Output isn't correct |
| 84 |
Incorrect |
76 ms |
6740 KB |
Output isn't correct |
| 85 |
Incorrect |
90 ms |
6804 KB |
Output isn't correct |
| 86 |
Incorrect |
96 ms |
6740 KB |
Output isn't correct |
| 87 |
Incorrect |
74 ms |
6760 KB |
Output isn't correct |
| 88 |
Incorrect |
76 ms |
6652 KB |
Output isn't correct |
| 89 |
Incorrect |
86 ms |
6756 KB |
Output isn't correct |
| 90 |
Incorrect |
88 ms |
6736 KB |
Output isn't correct |
| 91 |
Incorrect |
103 ms |
6680 KB |
Output isn't correct |
| 92 |
Incorrect |
80 ms |
6748 KB |
Output isn't correct |
