| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1100750 |
2024-10-14T15:22:30 Z |
Uniq0rn |
Mecho (IOI09_mecho) |
C++14 |
|
199 ms |
6548 KB |
#include <bits/stdc++.h>
using namespace std;
#define ld long double
#define ll long long int
#define pi pair<int,int>
#define sz(x) (int)x.size()
#define all(x) begin(x),end(x)
int main()
{
cin.tie(0)->sync_with_stdio(0);
int n,s;cin >> n >> s;
vector<vector<char>> a(n + 1,vector<char>(n + 1));
queue<pair<int,int>> qu;
vector<vector<int>> bdist(n + 1,vector<int>(n + 1));
vector<vector<bool>> bvis(n + 1,vector<bool>(n + 1));
int si = -1,sj = -1,ei = -1,ej = -1;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
cin >> a[i][j];
if(a[i][j] == 'H'){
bvis[i][j] = true;
qu.push({i,j});
}
if(a[i][j] == 'M'){
si = i;
sj = j;
}
if(a[i][j] == 'D'){
ei = i;
ej = j;
}
}
}
while(sz(qu)){
int ni = qu.front().first,nj = qu.front().second;
//cout << ni << ' ' << nj << '\n';
qu.pop();
for(int i=-1;i<=1;i++) for(int j=-1;j<=1;j++){
if(abs(i) == abs(j)) continue;
int ii = ni + i,jj = nj + j;
if(ii < 1 || ii > n || jj < 1 || jj > n) continue;
if(bvis[ii][jj] || a[ii][jj] == 'T' || a[ii][jj] == 'D') continue;
bvis[ii][jj] = true;
bdist[ii][jj] = bdist[ni][nj] + 1;
qu.push({ii,jj});
}
}
/*
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
cout << (bdist[i][j] == 1e9 ? -1 : bdist[i][j]) << ' ';
}
cout << '\n';
}
cout << "---------------------------------------------\n";
*/
int ans = -1;
int l = 0,r = n * n;
while(l <= r){
int mid = (l + r) >> 1;
//cout << mid << '\n';
vector<vector<int>> dist(n + 1,vector<int>(n + 1));
vector<vector<bool>> vis(n + 1,vector<bool>(n + 1));
queue<pair<int,int>> q;
q.push({si,sj});
vis[si][sj] = true;
bool ok = false;
while(sz(q)){
int ni = q.front().first,nj = q.front().second;
q.pop();
if(a[ni][nj] == 'D'){
ok = true;
break;
}
for(int i=-1;i<=1;i++) for(int j=-1;j<=1;j++){
if(abs(i) == abs(j)) continue;
int ii = ni + i,jj = nj + j;
if(ii < 1 || ii > n || jj < 1 || jj > n) continue;
if(vis[ii][jj]) continue;
if(a[ii][jj] == 'T' || a[ii][jj] == 'H') continue;
if(bdist[ii][jj] <= mid + (dist[ni][nj] + 1) / s) continue;
vis[ii][jj] = true;
dist[ii][jj] = dist[ni][nj] + 1;
q.push({ii,jj});
}
}
/*
for(int i=1;i<=n;i++) {
for(int j=1;j<=n;j++) {
cout << dist[i][j] << ' ';
}
cout << '\n';
}
*/
if(ok){
l = mid + 1;
ans = mid;
}
else r = mid - 1;
}
cout << ans;
/*
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
cout << bdist[i][j] << ' ';
}
cout << '\n';
}
*/
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:18:25: warning: variable 'ei' set but not used [-Wunused-but-set-variable]
18 | int si = -1,sj = -1,ei = -1,ej = -1;
| ^~
mecho.cpp:18:33: warning: variable 'ej' set but not used [-Wunused-but-set-variable]
18 | int si = -1,sj = -1,ei = -1,ej = -1;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
508 KB |
Output isn't correct |
| 4 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 5 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 6 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 7 |
Incorrect |
163 ms |
6540 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
336 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 11 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
336 KB |
Output is correct |
| 15 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 17 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 18 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 19 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 20 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 21 |
Incorrect |
1 ms |
352 KB |
Output isn't correct |
| 22 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 23 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
504 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 26 |
Incorrect |
2 ms |
336 KB |
Output isn't correct |
| 27 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 28 |
Incorrect |
2 ms |
336 KB |
Output isn't correct |
| 29 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 30 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 32 |
Incorrect |
2 ms |
532 KB |
Output isn't correct |
| 33 |
Incorrect |
17 ms |
1616 KB |
Output isn't correct |
| 34 |
Incorrect |
23 ms |
1664 KB |
Output isn't correct |
| 35 |
Incorrect |
22 ms |
1664 KB |
Output isn't correct |
| 36 |
Incorrect |
20 ms |
1872 KB |
Output isn't correct |
| 37 |
Incorrect |
32 ms |
1872 KB |
Output isn't correct |
| 38 |
Incorrect |
40 ms |
1976 KB |
Output isn't correct |
| 39 |
Incorrect |
26 ms |
2412 KB |
Output isn't correct |
| 40 |
Incorrect |
45 ms |
2412 KB |
Output isn't correct |
| 41 |
Incorrect |
39 ms |
2416 KB |
Output isn't correct |
| 42 |
Incorrect |
33 ms |
2848 KB |
Output isn't correct |
| 43 |
Incorrect |
52 ms |
2804 KB |
Output isn't correct |
| 44 |
Incorrect |
62 ms |
2864 KB |
Output isn't correct |
| 45 |
Incorrect |
41 ms |
3312 KB |
Output isn't correct |
| 46 |
Incorrect |
67 ms |
3472 KB |
Output isn't correct |
| 47 |
Incorrect |
66 ms |
3336 KB |
Output isn't correct |
| 48 |
Incorrect |
46 ms |
3664 KB |
Output isn't correct |
| 49 |
Incorrect |
77 ms |
3872 KB |
Output isn't correct |
| 50 |
Incorrect |
72 ms |
3860 KB |
Output isn't correct |
| 51 |
Incorrect |
54 ms |
4600 KB |
Output isn't correct |
| 52 |
Incorrect |
88 ms |
4432 KB |
Output isn't correct |
| 53 |
Incorrect |
88 ms |
4432 KB |
Output isn't correct |
| 54 |
Incorrect |
65 ms |
4944 KB |
Output isn't correct |
| 55 |
Incorrect |
104 ms |
5056 KB |
Output isn't correct |
| 56 |
Incorrect |
98 ms |
5072 KB |
Output isn't correct |
| 57 |
Incorrect |
74 ms |
5712 KB |
Output isn't correct |
| 58 |
Incorrect |
130 ms |
5724 KB |
Output isn't correct |
| 59 |
Incorrect |
119 ms |
5736 KB |
Output isn't correct |
| 60 |
Incorrect |
84 ms |
6380 KB |
Output isn't correct |
| 61 |
Incorrect |
148 ms |
6300 KB |
Output isn't correct |
| 62 |
Incorrect |
133 ms |
6464 KB |
Output isn't correct |
| 63 |
Incorrect |
115 ms |
6488 KB |
Output isn't correct |
| 64 |
Incorrect |
199 ms |
6452 KB |
Output isn't correct |
| 65 |
Incorrect |
179 ms |
6432 KB |
Output isn't correct |
| 66 |
Incorrect |
147 ms |
6440 KB |
Output isn't correct |
| 67 |
Correct |
117 ms |
6548 KB |
Output is correct |
| 68 |
Incorrect |
68 ms |
6460 KB |
Output isn't correct |
| 69 |
Incorrect |
75 ms |
6488 KB |
Output isn't correct |
| 70 |
Incorrect |
66 ms |
6532 KB |
Output isn't correct |
| 71 |
Incorrect |
65 ms |
6488 KB |
Output isn't correct |
| 72 |
Incorrect |
91 ms |
6456 KB |
Output isn't correct |
| 73 |
Incorrect |
68 ms |
6488 KB |
Output isn't correct |
| 74 |
Incorrect |
135 ms |
6480 KB |
Output isn't correct |
| 75 |
Incorrect |
98 ms |
6452 KB |
Output isn't correct |
| 76 |
Incorrect |
96 ms |
6468 KB |
Output isn't correct |
| 77 |
Incorrect |
108 ms |
6452 KB |
Output isn't correct |
| 78 |
Correct |
101 ms |
6272 KB |
Output is correct |
| 79 |
Incorrect |
145 ms |
6268 KB |
Output isn't correct |
| 80 |
Incorrect |
107 ms |
6384 KB |
Output isn't correct |
| 81 |
Incorrect |
103 ms |
6404 KB |
Output isn't correct |
| 82 |
Incorrect |
104 ms |
6496 KB |
Output isn't correct |
| 83 |
Incorrect |
107 ms |
6500 KB |
Output isn't correct |
| 84 |
Incorrect |
144 ms |
6480 KB |
Output isn't correct |
| 85 |
Incorrect |
94 ms |
6448 KB |
Output isn't correct |
| 86 |
Incorrect |
97 ms |
6456 KB |
Output isn't correct |
| 87 |
Incorrect |
113 ms |
6480 KB |
Output isn't correct |
| 88 |
Incorrect |
101 ms |
6460 KB |
Output isn't correct |
| 89 |
Incorrect |
159 ms |
6432 KB |
Output isn't correct |
| 90 |
Incorrect |
126 ms |
6448 KB |
Output isn't correct |
| 91 |
Incorrect |
113 ms |
6448 KB |
Output isn't correct |
| 92 |
Incorrect |
104 ms |
6508 KB |
Output isn't correct |
