| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 879152 |
2023-11-26T13:50:03 Z |
anarch_y |
Mecho (IOI09_mecho) |
C++17 |
|
151 ms |
7004 KB |
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define all(x) begin(x), end(x)
#define pb push_back
int N, S;
char A[800][800];
int d[800][800], D[800][800];
pii M, P;
int ans = -1;
int dr[4] = {-1, 0, 1, 0};
int dc[4] = {0, 1, 0, -1};
bool invalid(int r, int c){
if(r<0 or r>=N or c<0 or c>=N) return true;
if(A[r][c] == 'T') return true;
return false;
}
bool check(int k){
for(int i=0; i<N; i++){
for(int j=0; j<N; j++) d[i][j] = 1e9;
}
queue<pii> q, qn;
q.push(M);
int tt = 0;
d[M.first][M.second] = 0;
bool found = false;
for(int x=0; x<N; x++){
while(!q.empty()){
auto p = q.front(); q.pop();
int r = p.first, c = p.second;
if(d[r][c] == (tt+1)*S){
if(D[r][c]>k+tt+1){
qn.push({r, c});
}
continue;
}
for(int i=0; i<4; i++){
int nr = r+dr[i], nc = c+dc[i];
if(invalid(nr, nc)) continue;
if(d[nr][nc] != 1e9) continue;
d[nr][nc] = d[r][c]+1;
q.push({nr, nc});
if(P == pii(nr, nc)) found = true;
}
}
if(found) break;
q = qn;
qn = queue<pii>();
tt++;
}
return found;
}
void solve(){
int L = 1, R = N;
while(L <= R){
int mid = (L+R)/2;
if(check(mid)){
ans = mid;
L=mid+1;
}
else R=mid-1;
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
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] == 'M') M = {i, j};
if(A[i][j] == 'D') P = {i, j};
d[i][j] = D[i][j] = 1e9;
}
}
queue<pii> Q;
for(int i=0; i<N; i++){
for(int j=0; j<N; j++){
if(A[i][j] == 'H'){
Q.push({i, j});
D[i][j] = 0;
}
}
}
while(!Q.empty()){
auto p = Q.front(); Q.pop();
int r = p.first, c = p.second;
for(int i=0; i<4; i++){
int nr = r+dr[i], nc = c+dc[i];
if(invalid(nr, nc)) continue;
if(A[nr][nc] == 'D') continue;
if(D[nr][nc] != 1e9) continue;
D[nr][nc] = D[r][c]+1;
Q.push({nr, nc});
}
}
solve();
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2648 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
| 7 |
Incorrect |
69 ms |
6816 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
4788 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
2648 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 15 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 17 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 18 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 19 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 20 |
Incorrect |
1 ms |
2392 KB |
Output isn't correct |
| 21 |
Incorrect |
1 ms |
2652 KB |
Output isn't correct |
| 22 |
Incorrect |
1 ms |
2652 KB |
Output isn't correct |
| 23 |
Incorrect |
1 ms |
2652 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
2652 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 26 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 27 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 28 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 29 |
Incorrect |
1 ms |
4696 KB |
Output isn't correct |
| 30 |
Incorrect |
1 ms |
4952 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 32 |
Incorrect |
1 ms |
4700 KB |
Output isn't correct |
| 33 |
Incorrect |
4 ms |
4956 KB |
Output isn't correct |
| 34 |
Incorrect |
4 ms |
4956 KB |
Output isn't correct |
| 35 |
Incorrect |
13 ms |
5132 KB |
Output isn't correct |
| 36 |
Incorrect |
4 ms |
5212 KB |
Output isn't correct |
| 37 |
Incorrect |
5 ms |
5212 KB |
Output isn't correct |
| 38 |
Incorrect |
16 ms |
5220 KB |
Output isn't correct |
| 39 |
Incorrect |
6 ms |
5212 KB |
Output isn't correct |
| 40 |
Incorrect |
5 ms |
5212 KB |
Output isn't correct |
| 41 |
Incorrect |
20 ms |
5268 KB |
Output isn't correct |
| 42 |
Incorrect |
6 ms |
5208 KB |
Output isn't correct |
| 43 |
Incorrect |
7 ms |
5212 KB |
Output isn't correct |
| 44 |
Incorrect |
24 ms |
5212 KB |
Output isn't correct |
| 45 |
Incorrect |
8 ms |
5468 KB |
Output isn't correct |
| 46 |
Incorrect |
8 ms |
5268 KB |
Output isn't correct |
| 47 |
Incorrect |
30 ms |
5464 KB |
Output isn't correct |
| 48 |
Incorrect |
9 ms |
5464 KB |
Output isn't correct |
| 49 |
Incorrect |
9 ms |
5676 KB |
Output isn't correct |
| 50 |
Incorrect |
37 ms |
5660 KB |
Output isn't correct |
| 51 |
Incorrect |
12 ms |
5720 KB |
Output isn't correct |
| 52 |
Incorrect |
10 ms |
5928 KB |
Output isn't correct |
| 53 |
Incorrect |
43 ms |
5944 KB |
Output isn't correct |
| 54 |
Incorrect |
13 ms |
5976 KB |
Output isn't correct |
| 55 |
Incorrect |
11 ms |
5980 KB |
Output isn't correct |
| 56 |
Incorrect |
49 ms |
6112 KB |
Output isn't correct |
| 57 |
Incorrect |
13 ms |
6312 KB |
Output isn't correct |
| 58 |
Incorrect |
13 ms |
6236 KB |
Output isn't correct |
| 59 |
Incorrect |
69 ms |
6444 KB |
Output isn't correct |
| 60 |
Incorrect |
20 ms |
6492 KB |
Output isn't correct |
| 61 |
Incorrect |
14 ms |
6608 KB |
Output isn't correct |
| 62 |
Incorrect |
64 ms |
6724 KB |
Output isn't correct |
| 63 |
Incorrect |
45 ms |
6492 KB |
Output isn't correct |
| 64 |
Incorrect |
151 ms |
6488 KB |
Output isn't correct |
| 65 |
Incorrect |
138 ms |
6488 KB |
Output isn't correct |
| 66 |
Incorrect |
97 ms |
6708 KB |
Output isn't correct |
| 67 |
Correct |
51 ms |
6488 KB |
Output is correct |
| 68 |
Incorrect |
43 ms |
6744 KB |
Output isn't correct |
| 69 |
Correct |
37 ms |
6748 KB |
Output is correct |
| 70 |
Incorrect |
32 ms |
6748 KB |
Output isn't correct |
| 71 |
Incorrect |
29 ms |
6748 KB |
Output isn't correct |
| 72 |
Incorrect |
28 ms |
6748 KB |
Output isn't correct |
| 73 |
Incorrect |
30 ms |
7000 KB |
Output isn't correct |
| 74 |
Incorrect |
58 ms |
7004 KB |
Output isn't correct |
| 75 |
Incorrect |
46 ms |
6744 KB |
Output isn't correct |
| 76 |
Incorrect |
45 ms |
6948 KB |
Output isn't correct |
| 77 |
Incorrect |
47 ms |
7000 KB |
Output isn't correct |
| 78 |
Incorrect |
58 ms |
7000 KB |
Output isn't correct |
| 79 |
Incorrect |
63 ms |
6956 KB |
Output isn't correct |
| 80 |
Incorrect |
42 ms |
6744 KB |
Output isn't correct |
| 81 |
Incorrect |
51 ms |
6748 KB |
Output isn't correct |
| 82 |
Incorrect |
45 ms |
6748 KB |
Output isn't correct |
| 83 |
Incorrect |
57 ms |
6744 KB |
Output isn't correct |
| 84 |
Incorrect |
69 ms |
6748 KB |
Output isn't correct |
| 85 |
Incorrect |
69 ms |
6928 KB |
Output isn't correct |
| 86 |
Incorrect |
59 ms |
6912 KB |
Output isn't correct |
| 87 |
Incorrect |
55 ms |
6916 KB |
Output isn't correct |
| 88 |
Incorrect |
60 ms |
6748 KB |
Output isn't correct |
| 89 |
Incorrect |
60 ms |
6744 KB |
Output isn't correct |
| 90 |
Incorrect |
63 ms |
6744 KB |
Output isn't correct |
| 91 |
Incorrect |
60 ms |
6864 KB |
Output isn't correct |
| 92 |
Incorrect |
60 ms |
6744 KB |
Output isn't correct |
