| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 896750 |
2024-01-02T04:18:07 Z |
LCJLY |
Mecho (IOI09_mecho) |
C++14 |
|
174 ms |
12420 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]=='G'||arr[newx][newy]=='M'){
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;
if(mid<dist[start.first][start.second])q.push({start.first,start.second});
bool visited[n+5][n+5];
memset(visited,0,sizeof(visited));
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(dist2[newx][newy]!=-1) continue;
if(dist[newx][newy]<=(dist2[cur.first][cur.second]+1)/k) continue;
if(arr[newx][newy]=='M'||arr[newx][newy]=='G'){
dist2[newx][newy]=dist2[cur.first][cur.second]+1;
q.push({newx,newy});
}
}
}
bool amos=false;
for(auto it:dir){
int newx=done.first+it.first;
int newy=done.second+it.second;
if(newx<0||newy<0||newx>=n||newy>=n) continue;
if(dist2[newx][newy]==-1) continue;
if(dist[newx][newy]<=dist2[newx][newy]/k) continue;
if(arr[newx][newy]=='G'||arr[newx][newy]=='M'){
if(dist2[newx][newy]!=-1) amos=true;
}
}
if(amos){
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 |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
73 ms |
12080 KB |
Output is correct |
| 8 |
Correct |
1 ms |
344 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 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 |
344 KB |
Output is correct |
| 18 |
Correct |
1 ms |
344 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 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 |
0 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
0 ms |
348 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
756 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
0 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
344 KB |
Output is correct |
| 33 |
Correct |
3 ms |
2652 KB |
Output is correct |
| 34 |
Correct |
4 ms |
2904 KB |
Output is correct |
| 35 |
Correct |
14 ms |
2652 KB |
Output is correct |
| 36 |
Correct |
4 ms |
3164 KB |
Output is correct |
| 37 |
Correct |
5 ms |
3232 KB |
Output is correct |
| 38 |
Correct |
19 ms |
3160 KB |
Output is correct |
| 39 |
Correct |
6 ms |
3932 KB |
Output is correct |
| 40 |
Correct |
7 ms |
3932 KB |
Output is correct |
| 41 |
Correct |
26 ms |
3928 KB |
Output is correct |
| 42 |
Correct |
7 ms |
4700 KB |
Output is correct |
| 43 |
Correct |
8 ms |
4772 KB |
Output is correct |
| 44 |
Correct |
32 ms |
4944 KB |
Output is correct |
| 45 |
Correct |
9 ms |
5724 KB |
Output is correct |
| 46 |
Correct |
10 ms |
5980 KB |
Output is correct |
| 47 |
Correct |
38 ms |
5844 KB |
Output is correct |
| 48 |
Correct |
10 ms |
6748 KB |
Output is correct |
| 49 |
Correct |
12 ms |
6748 KB |
Output is correct |
| 50 |
Correct |
47 ms |
6748 KB |
Output is correct |
| 51 |
Correct |
12 ms |
7772 KB |
Output is correct |
| 52 |
Correct |
15 ms |
7772 KB |
Output is correct |
| 53 |
Correct |
68 ms |
7996 KB |
Output is correct |
| 54 |
Correct |
14 ms |
9048 KB |
Output is correct |
| 55 |
Correct |
17 ms |
9204 KB |
Output is correct |
| 56 |
Correct |
67 ms |
9052 KB |
Output is correct |
| 57 |
Correct |
15 ms |
10328 KB |
Output is correct |
| 58 |
Correct |
18 ms |
10332 KB |
Output is correct |
| 59 |
Correct |
79 ms |
10488 KB |
Output is correct |
| 60 |
Correct |
18 ms |
11612 KB |
Output is correct |
| 61 |
Correct |
23 ms |
11848 KB |
Output is correct |
| 62 |
Correct |
93 ms |
11868 KB |
Output is correct |
| 63 |
Correct |
107 ms |
11840 KB |
Output is correct |
| 64 |
Correct |
174 ms |
11860 KB |
Output is correct |
| 65 |
Correct |
142 ms |
11864 KB |
Output is correct |
| 66 |
Correct |
118 ms |
11868 KB |
Output is correct |
| 67 |
Correct |
113 ms |
11868 KB |
Output is correct |
| 68 |
Correct |
39 ms |
11860 KB |
Output is correct |
| 69 |
Correct |
40 ms |
11928 KB |
Output is correct |
| 70 |
Correct |
30 ms |
11864 KB |
Output is correct |
| 71 |
Correct |
38 ms |
11860 KB |
Output is correct |
| 72 |
Correct |
25 ms |
11864 KB |
Output is correct |
| 73 |
Correct |
28 ms |
12320 KB |
Output is correct |
| 74 |
Correct |
42 ms |
12340 KB |
Output is correct |
| 75 |
Correct |
49 ms |
12380 KB |
Output is correct |
| 76 |
Correct |
45 ms |
12420 KB |
Output is correct |
| 77 |
Correct |
45 ms |
12352 KB |
Output is correct |
| 78 |
Correct |
52 ms |
12112 KB |
Output is correct |
| 79 |
Correct |
39 ms |
12124 KB |
Output is correct |
| 80 |
Correct |
40 ms |
12124 KB |
Output is correct |
| 81 |
Correct |
47 ms |
12124 KB |
Output is correct |
| 82 |
Correct |
48 ms |
12192 KB |
Output is correct |
| 83 |
Correct |
69 ms |
12124 KB |
Output is correct |
| 84 |
Correct |
46 ms |
12120 KB |
Output is correct |
| 85 |
Correct |
54 ms |
12120 KB |
Output is correct |
| 86 |
Correct |
50 ms |
12120 KB |
Output is correct |
| 87 |
Correct |
56 ms |
12120 KB |
Output is correct |
| 88 |
Correct |
54 ms |
12124 KB |
Output is correct |
| 89 |
Correct |
54 ms |
12120 KB |
Output is correct |
| 90 |
Correct |
68 ms |
12172 KB |
Output is correct |
| 91 |
Correct |
75 ms |
12120 KB |
Output is correct |
| 92 |
Correct |
59 ms |
12164 KB |
Output is correct |
