| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 896738 |
2024-01-02T03:41:28 Z |
LCJLY |
Mecho (IOI09_mecho) |
C++14 |
|
314 ms |
21012 KB |
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << " " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << " " << j << " " << #i << " " << q << " " << #p << endl;
#define show4(x,y) for(auto it:x) cout << it << " "; cout << #y << endl;
typedef pair<int,int>pii;
typedef pair<pii,pii>pi2;
void solve(){
int n,k;
cin >> n >> k;
string arr[n];
for(int x=0;x<n;x++){
cin >> arr[x];
}
int l=0;
int r=n*n;
int best=-1;
int mid;
pii start;
pii done;
int dist[n+5][n+5];
memset(dist,-1,sizeof(dist));
queue<pii>q;
for(int x=0;x<n;x++){
for(int y=0;y<n;y++){
if(arr[x][y]=='H'){
q.push({x,y});
dist[x][y]=0;
}
else if(arr[x][y]=='M') start={x,y};
else if(arr[x][y]=='D') done={x,y};
}
}
pii dir[4]={
{0,1},
{0,-1},
{1,0},
{-1,0},
};
while(!q.empty()){
pii cur=q.front();
q.pop();
for(auto it:dir){
int newx=cur.first+it.first;
int newy=cur.second+it.second;
if(newx<0||newy<0||newx>=n||newy>=n) continue;
if(dist[newx][newy]!=-1) continue;
if(arr[newx][newy]=='T') continue;
dist[newx][newy]=dist[cur.first][cur.second]+1;
q.push({newx,newy});
}
}
while(l<=r){
mid=(l+r)/2;
int dist2[n][n];
memset(dist2,-1,sizeof(dist2));
dist2[start.first][start.second]=k*mid;
q.push({start.first,start.second});
bool visited[n+5][n+5];
memset(visited,0,sizeof(visited));
for(int x=0;x<n;x++){
vector<pii>storage;
int target=(x+1+mid)*k;
while(!q.empty()){
pii cur=q.front();
q.pop();
if((dist2[cur.first][cur.second]+k-1)/k==x+mid+1&&x+mid+1<dist[cur.first][cur.second]){
storage.push_back({cur.first,cur.second});
visited[cur.first][cur.second]=1;
}
if(dist2[cur.first][cur.second]>=target) continue;
for(auto it:dir){
int newx=cur.first+it.first;
int newy=cur.second+it.second;
if(newx<0||newy<0||newx>=n||newy>=n) continue;
if(dist2[newx][newy]!=-1) continue;
if(arr[newx][newy]=='T') continue;
dist2[newx][newy]=dist2[cur.first][cur.second]+1;
q.push({newx,newy});
}
}
for(auto it:storage) q.push(it);
}
if(visited[done.first][done.second]){
best=mid;
l=mid+1;
}
else r=mid-1;
}
cout << best;
}
int32_t main(){
ios::sync_with_stdio(0);
cin.tie(0);
//freopen("out.txt", "w", stdout);
int t=1;
//cin >> t;
while(t--){
solve();
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
118 ms |
12816 KB |
Output isn't correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
344 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
0 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
600 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
10 ms |
2652 KB |
Output is correct |
| 34 |
Correct |
6 ms |
2652 KB |
Output is correct |
| 35 |
Incorrect |
33 ms |
4140 KB |
Output isn't correct |
| 36 |
Correct |
11 ms |
3160 KB |
Output is correct |
| 37 |
Correct |
7 ms |
3160 KB |
Output is correct |
| 38 |
Incorrect |
42 ms |
5208 KB |
Output isn't correct |
| 39 |
Correct |
16 ms |
3932 KB |
Output is correct |
| 40 |
Correct |
9 ms |
3932 KB |
Output is correct |
| 41 |
Incorrect |
55 ms |
6304 KB |
Output isn't correct |
| 42 |
Correct |
22 ms |
4696 KB |
Output is correct |
| 43 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 44 |
Incorrect |
73 ms |
7772 KB |
Output isn't correct |
| 45 |
Correct |
26 ms |
6080 KB |
Output is correct |
| 46 |
Correct |
13 ms |
5724 KB |
Output is correct |
| 47 |
Incorrect |
89 ms |
9748 KB |
Output isn't correct |
| 48 |
Correct |
28 ms |
6748 KB |
Output is correct |
| 49 |
Correct |
15 ms |
6956 KB |
Output is correct |
| 50 |
Incorrect |
107 ms |
10964 KB |
Output isn't correct |
| 51 |
Correct |
33 ms |
7772 KB |
Output is correct |
| 52 |
Correct |
18 ms |
8028 KB |
Output is correct |
| 53 |
Incorrect |
130 ms |
13312 KB |
Output isn't correct |
| 54 |
Correct |
47 ms |
9052 KB |
Output is correct |
| 55 |
Correct |
20 ms |
9048 KB |
Output is correct |
| 56 |
Incorrect |
159 ms |
14100 KB |
Output isn't correct |
| 57 |
Correct |
50 ms |
10332 KB |
Output is correct |
| 58 |
Correct |
28 ms |
10588 KB |
Output is correct |
| 59 |
Incorrect |
197 ms |
19144 KB |
Output isn't correct |
| 60 |
Correct |
43 ms |
11608 KB |
Output is correct |
| 61 |
Correct |
31 ms |
11868 KB |
Output is correct |
| 62 |
Incorrect |
255 ms |
21012 KB |
Output isn't correct |
| 63 |
Incorrect |
159 ms |
11864 KB |
Output isn't correct |
| 64 |
Correct |
314 ms |
20456 KB |
Output is correct |
| 65 |
Incorrect |
275 ms |
11936 KB |
Output isn't correct |
| 66 |
Incorrect |
162 ms |
11856 KB |
Output isn't correct |
| 67 |
Incorrect |
176 ms |
11868 KB |
Output isn't correct |
| 68 |
Incorrect |
53 ms |
11864 KB |
Output isn't correct |
| 69 |
Correct |
86 ms |
13720 KB |
Output is correct |
| 70 |
Incorrect |
39 ms |
11860 KB |
Output isn't correct |
| 71 |
Incorrect |
33 ms |
11908 KB |
Output isn't correct |
| 72 |
Incorrect |
32 ms |
11952 KB |
Output isn't correct |
| 73 |
Incorrect |
49 ms |
12368 KB |
Output isn't correct |
| 74 |
Correct |
134 ms |
16088 KB |
Output is correct |
| 75 |
Correct |
80 ms |
12376 KB |
Output is correct |
| 76 |
Correct |
67 ms |
12380 KB |
Output is correct |
| 77 |
Correct |
69 ms |
12376 KB |
Output is correct |
| 78 |
Correct |
87 ms |
12124 KB |
Output is correct |
| 79 |
Correct |
144 ms |
16172 KB |
Output is correct |
| 80 |
Correct |
67 ms |
12120 KB |
Output is correct |
| 81 |
Correct |
74 ms |
12336 KB |
Output is correct |
| 82 |
Correct |
74 ms |
12404 KB |
Output is correct |
| 83 |
Correct |
89 ms |
12268 KB |
Output is correct |
| 84 |
Correct |
171 ms |
16888 KB |
Output is correct |
| 85 |
Correct |
105 ms |
12476 KB |
Output is correct |
| 86 |
Correct |
86 ms |
12304 KB |
Output is correct |
| 87 |
Correct |
100 ms |
12860 KB |
Output is correct |
| 88 |
Correct |
104 ms |
12560 KB |
Output is correct |
| 89 |
Correct |
208 ms |
20408 KB |
Output is correct |
| 90 |
Correct |
133 ms |
12836 KB |
Output is correct |
| 91 |
Correct |
106 ms |
13704 KB |
Output is correct |
| 92 |
Correct |
108 ms |
12420 KB |
Output is correct |
