| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 960605 |
2024-04-10T16:56:25 Z |
LmaoLmao |
Mecho (IOI09_mecho) |
C++14 |
|
3 ms |
604 KB |
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
using ll = long long;
using ii = pair<int, int>;
const int N = 1e6+5;
const int INF = 1e9;
ll d[1000][1000],m[1000][1000],n,s;
char a[1000][1000];
ll dx[4]={1,0,0,-1};
ll dy[4]={0,1,-1,0};
ii pos,h;
bool bfs(ll x) {
queue<ii> q;
q.push(pos);
for(int i=0;i<n;i++) {
for(int j=0;j<n;j++) {
m[i][j]=0;
}
}
while(!q.empty()) {
if(d[pos.fi][pos.se]-x*s<=0) return 0;
ii u=q.front();
q.pop();
for(int i=0;i<4;i++) {
ii v={u.fi+dx[i],u.se+dy[i]};
if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
if(m[v.fi][v.se]==0 && a[v.fi][v.se]!='T' &&
d[v.fi][v.se]-x*s>m[u.fi][u.se]+1 && a[v.fi][v.se]!='M') {
m[v.fi][v.se]=m[u.fi][u.se]+1;
q.push(v);
}
}
}
if(m[h.fi][h.se]>0) return 1; else return 0;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
queue<ii> q;
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]=='H') {
q.push({i,j});
}
if(a[i][j]=='M') pos={i,j};
if(a[i][j]=='D') h={i,j};
}
}
while(!q.empty()) {
ii u=q.front();
q.pop();
for(int i=0;i<4;i++) {
ii v={u.fi+dx[i],u.se+dy[i]};
if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
if(d[v.fi][v.se]==0 && a[v.fi][v.se]!='T' && a[v.fi][v.se]!='H') {
d[v.fi][v.se]=d[u.fi][u.se]+s;
q.push(v);
}
}
}
ll l=0,r=1000000,ans=1;
while(l<=r) {
int m=(l+r)/2;
if(bfs(m)) {
ans=m;
l=m+1;
}
else {
r=m-1;
}
}
cout << ans;
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:48:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
48 | freopen("in.txt", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
mecho.cpp:49:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
49 | freopen("out.txt", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 2 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 4 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 5 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 6 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 12 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 13 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
600 KB |
Output isn't correct |
| 15 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 16 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 17 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 18 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 19 |
Incorrect |
2 ms |
372 KB |
Output isn't correct |
| 20 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 21 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 22 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 23 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 24 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 25 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 26 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 27 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 28 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 29 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 30 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 32 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 33 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 34 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 35 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 36 |
Incorrect |
2 ms |
360 KB |
Output isn't correct |
| 37 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 38 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 39 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 40 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 41 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 42 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 43 |
Incorrect |
2 ms |
604 KB |
Output isn't correct |
| 44 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 45 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 46 |
Incorrect |
3 ms |
348 KB |
Output isn't correct |
| 47 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 48 |
Incorrect |
2 ms |
544 KB |
Output isn't correct |
| 49 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 50 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 51 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 52 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 53 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 54 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 55 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 56 |
Incorrect |
2 ms |
504 KB |
Output isn't correct |
| 57 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 58 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 59 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 60 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 61 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 62 |
Incorrect |
3 ms |
348 KB |
Output isn't correct |
| 63 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 64 |
Incorrect |
2 ms |
600 KB |
Output isn't correct |
| 65 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 66 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 67 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 68 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 69 |
Incorrect |
2 ms |
532 KB |
Output isn't correct |
| 70 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 71 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 72 |
Incorrect |
1 ms |
508 KB |
Output isn't correct |
| 73 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 74 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 75 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 76 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 77 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 78 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 79 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 80 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 81 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 82 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 83 |
Incorrect |
2 ms |
344 KB |
Output isn't correct |
| 84 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 85 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 86 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 87 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 88 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 89 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 90 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 91 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 92 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
