| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 956827 |
2024-04-02T14:11:46 Z |
wood |
Mecho (IOI09_mecho) |
C++17 |
|
148 ms |
6484 KB |
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> p32;
typedef pair<ll,ll> p64;
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define MOD %1000000007
int dfx[4] = {1,-1,0,0}; int dfy[4] = {0,0,1,-1};
int main()
{
fast_cin();
#ifndef ONLINE_JUDGE
#ifdef _WIN32
freopen("input.in", "r", stdin);
freopen("input.out", "w", stdout);
#endif
#endif
int n,s; cin>>n>>s;
char arr[n][n];
int bees[n][n];
fill(bees[0],bees[0]+n*n,INT_MAX);
queue<p32> hq;
p32 start;
for (size_t i = 0; i < n; i++)
{
for (size_t j = 0; j < n; j++)
{
cin>>arr[i][j];
if(arr[i][j]=='H'){
bees[i][j] = 1;
hq.emplace(i,j);
}
if(arr[i][j]=='M') start = p32(i,j);
}
}
while(!hq.empty()){
for (size_t i = 0; i < 4; i++)
{
int x = hq.front().fi+dfx[i];
int y = hq.front().se+dfy[i];
if(x>=0&&x<n&&y>=0&&y<n&&bees[x][y]==INT_MAX&&arr[x][y]!='T'&&arr[x][y]!='D'){
bees[x][y] = bees[hq.front().fi][hq.front().se] + 1;
hq.emplace(x,y);
}
}
hq.pop();
}
int l = -1;
int r = 1000;
while(r-l>1){
int mid = (l+r)/2;
queue<p32> q;
q.push(start);
int depth[n][n];
memset(depth,0,sizeof depth);
depth[start.fi][start.se] = 1;
while(!q.empty()){
for (size_t i = 0; i < 4; i++)
{
int x = q.front().fi+dfx[i];
int y = q.front().se+dfy[i];
int d = depth[q.front().fi][q.front().se];
if(x>=0&&x<n&&y>=0&&y<n&&!depth[x][y]&&arr[x][y]!='T'&&(d+s-1)/s+mid<bees[x][y]){
if(arr[x][y]=='D'&&mid<bees[start.fi][start.se]){
l = mid;
goto next;
}
depth[x][y] = d+1;
q.emplace(x,y);
}
}
q.pop();
}
r = mid;
next:
continue;
}
cout<<l<<'\n';
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:31:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
31 | for (size_t i = 0; i < n; i++)
| ~~^~~
mecho.cpp:33:30: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
33 | for (size_t j = 0; j < n; j++)
| ~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 4 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
66 ms |
5980 KB |
Output is correct |
| 8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 13 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 16 |
Correct |
0 ms |
344 KB |
Output is correct |
| 17 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 22 |
Correct |
0 ms |
344 KB |
Output is correct |
| 23 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 24 |
Correct |
0 ms |
344 KB |
Output is correct |
| 25 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 30 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 32 |
Incorrect |
1 ms |
396 KB |
Output isn't correct |
| 33 |
Incorrect |
3 ms |
1368 KB |
Output isn't correct |
| 34 |
Incorrect |
3 ms |
1368 KB |
Output isn't correct |
| 35 |
Correct |
15 ms |
1532 KB |
Output is correct |
| 36 |
Incorrect |
4 ms |
1628 KB |
Output isn't correct |
| 37 |
Incorrect |
4 ms |
1628 KB |
Output isn't correct |
| 38 |
Correct |
19 ms |
1628 KB |
Output is correct |
| 39 |
Incorrect |
6 ms |
2136 KB |
Output isn't correct |
| 40 |
Incorrect |
5 ms |
2336 KB |
Output isn't correct |
| 41 |
Correct |
24 ms |
2140 KB |
Output is correct |
| 42 |
Incorrect |
6 ms |
2600 KB |
Output isn't correct |
| 43 |
Incorrect |
6 ms |
2652 KB |
Output isn't correct |
| 44 |
Correct |
30 ms |
2648 KB |
Output is correct |
| 45 |
Incorrect |
7 ms |
2908 KB |
Output isn't correct |
| 46 |
Incorrect |
7 ms |
2908 KB |
Output isn't correct |
| 47 |
Correct |
39 ms |
2904 KB |
Output is correct |
| 48 |
Incorrect |
8 ms |
3416 KB |
Output isn't correct |
| 49 |
Incorrect |
11 ms |
3676 KB |
Output isn't correct |
| 50 |
Correct |
49 ms |
3492 KB |
Output is correct |
| 51 |
Incorrect |
10 ms |
3932 KB |
Output isn't correct |
| 52 |
Incorrect |
10 ms |
4060 KB |
Output isn't correct |
| 53 |
Correct |
55 ms |
3928 KB |
Output is correct |
| 54 |
Incorrect |
11 ms |
4700 KB |
Output isn't correct |
| 55 |
Incorrect |
11 ms |
4700 KB |
Output isn't correct |
| 56 |
Correct |
64 ms |
4752 KB |
Output is correct |
| 57 |
Incorrect |
13 ms |
5212 KB |
Output isn't correct |
| 58 |
Incorrect |
13 ms |
5212 KB |
Output isn't correct |
| 59 |
Correct |
75 ms |
5392 KB |
Output is correct |
| 60 |
Incorrect |
14 ms |
5976 KB |
Output isn't correct |
| 61 |
Incorrect |
15 ms |
5980 KB |
Output isn't correct |
| 62 |
Correct |
87 ms |
5980 KB |
Output is correct |
| 63 |
Correct |
86 ms |
5864 KB |
Output is correct |
| 64 |
Correct |
148 ms |
6136 KB |
Output is correct |
| 65 |
Correct |
131 ms |
6072 KB |
Output is correct |
| 66 |
Incorrect |
109 ms |
6064 KB |
Output isn't correct |
| 67 |
Correct |
84 ms |
5972 KB |
Output is correct |
| 68 |
Correct |
47 ms |
5980 KB |
Output is correct |
| 69 |
Correct |
35 ms |
5976 KB |
Output is correct |
| 70 |
Correct |
35 ms |
5980 KB |
Output is correct |
| 71 |
Correct |
30 ms |
5980 KB |
Output is correct |
| 72 |
Incorrect |
25 ms |
5968 KB |
Output isn't correct |
| 73 |
Incorrect |
26 ms |
6232 KB |
Output isn't correct |
| 74 |
Correct |
43 ms |
6348 KB |
Output is correct |
| 75 |
Correct |
48 ms |
6236 KB |
Output is correct |
| 76 |
Correct |
44 ms |
6232 KB |
Output is correct |
| 77 |
Correct |
43 ms |
6340 KB |
Output is correct |
| 78 |
Correct |
51 ms |
6236 KB |
Output is correct |
| 79 |
Correct |
50 ms |
6224 KB |
Output is correct |
| 80 |
Correct |
46 ms |
6236 KB |
Output is correct |
| 81 |
Correct |
52 ms |
6236 KB |
Output is correct |
| 82 |
Correct |
48 ms |
6236 KB |
Output is correct |
| 83 |
Correct |
59 ms |
6284 KB |
Output is correct |
| 84 |
Correct |
53 ms |
6236 KB |
Output is correct |
| 85 |
Correct |
52 ms |
6236 KB |
Output is correct |
| 86 |
Correct |
57 ms |
6228 KB |
Output is correct |
| 87 |
Correct |
59 ms |
6484 KB |
Output is correct |
| 88 |
Correct |
59 ms |
6224 KB |
Output is correct |
| 89 |
Correct |
59 ms |
6228 KB |
Output is correct |
| 90 |
Correct |
63 ms |
6480 KB |
Output is correct |
| 91 |
Correct |
59 ms |
5976 KB |
Output is correct |
| 92 |
Correct |
64 ms |
6232 KB |
Output is correct |
