| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 74079 |
2018-08-30T03:31:42 Z |
funcsr |
Mecho (IOI09_mecho) |
C++17 |
|
335 ms |
8152 KB |
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <cstring>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <cmath>
#include <iomanip>
#include <cassert>
#include <bitset>
using namespace std;
typedef pair<int, int> P;
#define rep(i, n) for (int i=0; i<(n); i++)
#define all(c) (c).begin(), (c).end()
#define uniq(c) c.erase(unique(all(c)), (c).end())
#define index(xs, x) (int)(lower_bound(all(xs), x) - xs.begin())
#define _1 first
#define _2 second
#define pb push_back
#define INF 1145141919
#define MOD 1000000007
const int DX[4]={-1,0,1,0};
const int DY[4]={0,-1,0,1};
int N, S;
char A[800][800];
int T[800][800];
int dp[800][800];
bool f(int X) {
queue<P> q;
rep(x,N)rep(y,N)dp[x][y]=INF;
rep(y,N)rep(x,N)if(A[x][y]=='M'&&1LL*X*S<T[x][y])dp[x][y]=X*S,q.push(P(x,y));
while(!q.empty()){
int x=q.front()._1, y=q.front()._2;q.pop();
rep(k,4){
int nx=x+DX[k],ny=y+DY[k];
if(nx<0||nx>=N||ny<0||ny>=N||A[nx][ny]=='T'||dp[nx][ny]<=dp[x][y]+1) continue;
if (A[nx][ny]=='D')return true;
if (dp[x][y]+1>=T[nx][ny]) continue;
dp[nx][ny]=dp[x][y]+1;
q.push(P(nx,ny));
}
}
return false;
}
signed main() {
ios::sync_with_stdio(false); cin.tie(0);
cin >> N >> S;
rep(y,N)rep(x,N)cin>>A[x][y],T[x][y]=INF;
queue<P> q;
rep(x,N)rep(y,N)if(A[x][y]=='H') T[x][y]=0, q.push(P(x,y));
while(!q.empty()){
int x=q.front()._1, y=q.front()._2;q.pop();
rep(k,4){
int nx=x+DX[k],ny=y+DY[k];
if(nx<0||nx>=N||ny<0||ny>=N||A[nx][ny]=='T'||A[nx][ny]=='D'||T[nx][ny]!=INF) continue;
T[nx][ny]=T[x][y]+S;
q.push(P(nx,ny));
}
}
int lo=-1, hi=N*N+1;
while (hi-lo>1){
int mid=(lo+hi)/2;
if (f(mid)) lo = mid;
else hi=mid;
}
cout << lo << "\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
552 KB |
Output is correct |
| 3 |
Correct |
2 ms |
552 KB |
Output is correct |
| 4 |
Correct |
2 ms |
552 KB |
Output is correct |
| 5 |
Correct |
2 ms |
552 KB |
Output is correct |
| 6 |
Correct |
2 ms |
660 KB |
Output is correct |
| 7 |
Correct |
176 ms |
6348 KB |
Output is correct |
| 8 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 9 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 10 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 11 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 12 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 13 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 14 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 15 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 16 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 17 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 18 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 19 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 20 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 21 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 22 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 23 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 24 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 25 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 26 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 27 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 28 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 29 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 30 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 31 |
Correct |
2 ms |
6348 KB |
Output is correct |
| 32 |
Correct |
3 ms |
6348 KB |
Output is correct |
| 33 |
Correct |
11 ms |
6348 KB |
Output is correct |
| 34 |
Correct |
11 ms |
6348 KB |
Output is correct |
| 35 |
Correct |
31 ms |
6348 KB |
Output is correct |
| 36 |
Correct |
14 ms |
6348 KB |
Output is correct |
| 37 |
Correct |
15 ms |
6348 KB |
Output is correct |
| 38 |
Correct |
42 ms |
6348 KB |
Output is correct |
| 39 |
Correct |
17 ms |
6348 KB |
Output is correct |
| 40 |
Correct |
17 ms |
6348 KB |
Output is correct |
| 41 |
Correct |
74 ms |
6348 KB |
Output is correct |
| 42 |
Correct |
25 ms |
6348 KB |
Output is correct |
| 43 |
Correct |
21 ms |
6348 KB |
Output is correct |
| 44 |
Correct |
79 ms |
6348 KB |
Output is correct |
| 45 |
Correct |
26 ms |
6348 KB |
Output is correct |
| 46 |
Correct |
27 ms |
6348 KB |
Output is correct |
| 47 |
Correct |
103 ms |
6348 KB |
Output is correct |
| 48 |
Correct |
28 ms |
6348 KB |
Output is correct |
| 49 |
Correct |
29 ms |
6348 KB |
Output is correct |
| 50 |
Correct |
102 ms |
6348 KB |
Output is correct |
| 51 |
Correct |
40 ms |
6348 KB |
Output is correct |
| 52 |
Correct |
41 ms |
6348 KB |
Output is correct |
| 53 |
Correct |
132 ms |
6348 KB |
Output is correct |
| 54 |
Correct |
51 ms |
6348 KB |
Output is correct |
| 55 |
Correct |
46 ms |
6348 KB |
Output is correct |
| 56 |
Correct |
169 ms |
6348 KB |
Output is correct |
| 57 |
Correct |
49 ms |
6348 KB |
Output is correct |
| 58 |
Correct |
46 ms |
6348 KB |
Output is correct |
| 59 |
Correct |
208 ms |
6348 KB |
Output is correct |
| 60 |
Correct |
62 ms |
6368 KB |
Output is correct |
| 61 |
Correct |
63 ms |
6484 KB |
Output is correct |
| 62 |
Correct |
233 ms |
6484 KB |
Output is correct |
| 63 |
Correct |
170 ms |
6484 KB |
Output is correct |
| 64 |
Correct |
335 ms |
6496 KB |
Output is correct |
| 65 |
Correct |
245 ms |
6496 KB |
Output is correct |
| 66 |
Correct |
208 ms |
6496 KB |
Output is correct |
| 67 |
Correct |
190 ms |
6496 KB |
Output is correct |
| 68 |
Correct |
101 ms |
6496 KB |
Output is correct |
| 69 |
Correct |
102 ms |
6496 KB |
Output is correct |
| 70 |
Correct |
87 ms |
6496 KB |
Output is correct |
| 71 |
Correct |
94 ms |
6496 KB |
Output is correct |
| 72 |
Correct |
89 ms |
6496 KB |
Output is correct |
| 73 |
Correct |
82 ms |
6708 KB |
Output is correct |
| 74 |
Correct |
119 ms |
6708 KB |
Output is correct |
| 75 |
Correct |
138 ms |
6752 KB |
Output is correct |
| 76 |
Correct |
139 ms |
6752 KB |
Output is correct |
| 77 |
Correct |
123 ms |
6752 KB |
Output is correct |
| 78 |
Correct |
140 ms |
6752 KB |
Output is correct |
| 79 |
Correct |
102 ms |
6752 KB |
Output is correct |
| 80 |
Correct |
117 ms |
6752 KB |
Output is correct |
| 81 |
Correct |
121 ms |
6752 KB |
Output is correct |
| 82 |
Correct |
105 ms |
6752 KB |
Output is correct |
| 83 |
Correct |
128 ms |
6752 KB |
Output is correct |
| 84 |
Correct |
118 ms |
6752 KB |
Output is correct |
| 85 |
Correct |
143 ms |
6752 KB |
Output is correct |
| 86 |
Correct |
126 ms |
6752 KB |
Output is correct |
| 87 |
Correct |
124 ms |
7184 KB |
Output is correct |
| 88 |
Correct |
149 ms |
7524 KB |
Output is correct |
| 89 |
Correct |
152 ms |
7832 KB |
Output is correct |
| 90 |
Correct |
155 ms |
8148 KB |
Output is correct |
| 91 |
Correct |
154 ms |
8152 KB |
Output is correct |
| 92 |
Correct |
166 ms |
8152 KB |
Output is correct |
