| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 522410 |
2022-02-04T22:51:54 Z |
AndresTL |
Mecho (IOI09_mecho) |
C++11 |
|
160 ms |
6360 KB |
#include<iostream>
#include<utility>
#include<queue>
#include<string>
#define fi first
#define se second
using namespace std;
int n,s;
char mapa[802][802];
int colmena[802][802];
int mecho[802][802];
int mov[4][2]={{0,1},{0,-1},{1,0},{-1,0}};
bool abeja(int i, int j){
if(i<0 || i>n || j<0 || j>n) return 0;
if(colmena[i][j]!=-1) return 0;
if(mapa[i][j]=='T' && mapa[i][j]=='D') return 0;
return 1;
}
void BFScolmena(){
queue<pair<int,int>> q;
pair<int,int> dad, son;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
if(mapa[i][j]=='H'){
q.push(make_pair(i,j));
colmena[i][j]=0;
}
}
}
while(!q.empty()){
dad=q.front();
q.pop();
for(int i=0;i<4;i++){
son=make_pair(dad.fi+mov[i][0],dad.se+mov[i][1]);
if(!abeja(son.first,son.second))continue;
colmena[son.fi][son.se]=colmena[dad.fi][dad.se]+1;
q.push(son);
}
}
}
int i1,i2,j1,j2;
bool paso(int i,int j,int time){
if(i<0 || i>n || j<0 || j>n) return 0;
if(mecho[i][j]!=-1) return 0;
if(mapa[i][j]=='T') return 0;
if(mapa[i][j]=='D') return 1;
if(time>=colmena[i][j]) return 0;
return 1;
}
bool BFSmecho(int t){
queue<pair<int,int>> q;
pair<int,int>dad,son;
int time;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
mecho[i][j]=-1;
}
}
mecho[i1][j1]=0;
if(t>=colmena[i1][j1]) return 0;
q.push(make_pair(i1,j1));
while(!q.empty()){
dad=q.front();
q.pop();
for(int i=0;i<4;i++){
son=make_pair(dad.fi+mov[i][0],dad.se+mov[i][1]);
time=t+(mecho[dad.fi][dad.se]+1)/s;
if(!paso(son.fi,son.se,time)) continue;
mecho[son.fi][son.se]=mecho[dad.fi][dad.se]+1;
q.push(son);
}
}
return mecho[i2][j2]!=-1;
}
int main(){
cin>>n>>s;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
colmena[i][j]=-1;
cin>>mapa[i][j];
if(mapa[i][j]=='M'){i1=i;j1=j;}
if(mapa[i][j]=='D'){i2=i;j2=j;}
}
}
BFScolmena();
int l=0,r=n*n,m;
int res=-1;
while(l<=r){
m =(l+r)/2;
if(BFSmecho(m)){
res=m;
l=m+1;
}else{
r=m-1;
}
}
cout<<res<<'\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
300 KB |
Output isn't correct |
| 5 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
109 ms |
6340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
300 KB |
Output is correct |
| 9 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 10 |
Correct |
0 ms |
332 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
1 ms |
716 KB |
Output is correct |
| 15 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 17 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 18 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 19 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 20 |
Incorrect |
1 ms |
460 KB |
Output isn't correct |
| 21 |
Incorrect |
1 ms |
588 KB |
Output isn't correct |
| 22 |
Incorrect |
1 ms |
588 KB |
Output isn't correct |
| 23 |
Incorrect |
1 ms |
588 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
588 KB |
Output isn't correct |
| 25 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 26 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 27 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 28 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 29 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 30 |
Incorrect |
1 ms |
716 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
844 KB |
Output isn't correct |
| 32 |
Incorrect |
1 ms |
844 KB |
Output isn't correct |
| 33 |
Incorrect |
12 ms |
2764 KB |
Output isn't correct |
| 34 |
Incorrect |
11 ms |
2708 KB |
Output isn't correct |
| 35 |
Correct |
25 ms |
2752 KB |
Output is correct |
| 36 |
Incorrect |
13 ms |
3108 KB |
Output isn't correct |
| 37 |
Incorrect |
16 ms |
3036 KB |
Output isn't correct |
| 38 |
Correct |
33 ms |
3024 KB |
Output is correct |
| 39 |
Incorrect |
15 ms |
3404 KB |
Output isn't correct |
| 40 |
Incorrect |
16 ms |
3448 KB |
Output isn't correct |
| 41 |
Correct |
42 ms |
3368 KB |
Output is correct |
| 42 |
Incorrect |
19 ms |
3788 KB |
Output isn't correct |
| 43 |
Incorrect |
20 ms |
3816 KB |
Output isn't correct |
| 44 |
Correct |
54 ms |
3816 KB |
Output is correct |
| 45 |
Incorrect |
25 ms |
4172 KB |
Output isn't correct |
| 46 |
Incorrect |
30 ms |
4164 KB |
Output isn't correct |
| 47 |
Correct |
58 ms |
4180 KB |
Output is correct |
| 48 |
Incorrect |
27 ms |
4496 KB |
Output isn't correct |
| 49 |
Incorrect |
29 ms |
4540 KB |
Output isn't correct |
| 50 |
Correct |
69 ms |
4420 KB |
Output is correct |
| 51 |
Incorrect |
34 ms |
4812 KB |
Output isn't correct |
| 52 |
Incorrect |
33 ms |
4812 KB |
Output isn't correct |
| 53 |
Correct |
93 ms |
4896 KB |
Output is correct |
| 54 |
Incorrect |
38 ms |
5172 KB |
Output isn't correct |
| 55 |
Incorrect |
39 ms |
5188 KB |
Output isn't correct |
| 56 |
Correct |
102 ms |
5216 KB |
Output is correct |
| 57 |
Incorrect |
42 ms |
5484 KB |
Output isn't correct |
| 58 |
Incorrect |
44 ms |
5592 KB |
Output isn't correct |
| 59 |
Correct |
125 ms |
5596 KB |
Output is correct |
| 60 |
Incorrect |
48 ms |
5876 KB |
Output isn't correct |
| 61 |
Incorrect |
49 ms |
5828 KB |
Output isn't correct |
| 62 |
Correct |
136 ms |
5944 KB |
Output is correct |
| 63 |
Incorrect |
49 ms |
5888 KB |
Output isn't correct |
| 64 |
Incorrect |
160 ms |
5840 KB |
Output isn't correct |
| 65 |
Incorrect |
127 ms |
5944 KB |
Output isn't correct |
| 66 |
Incorrect |
51 ms |
5828 KB |
Output isn't correct |
| 67 |
Correct |
64 ms |
5856 KB |
Output is correct |
| 68 |
Incorrect |
50 ms |
6096 KB |
Output isn't correct |
| 69 |
Incorrect |
56 ms |
6048 KB |
Output isn't correct |
| 70 |
Incorrect |
49 ms |
6008 KB |
Output isn't correct |
| 71 |
Incorrect |
58 ms |
6084 KB |
Output isn't correct |
| 72 |
Incorrect |
51 ms |
6016 KB |
Output isn't correct |
| 73 |
Correct |
56 ms |
6168 KB |
Output is correct |
| 74 |
Correct |
74 ms |
6212 KB |
Output is correct |
| 75 |
Correct |
90 ms |
6096 KB |
Output is correct |
| 76 |
Correct |
81 ms |
6184 KB |
Output is correct |
| 77 |
Correct |
87 ms |
6360 KB |
Output is correct |
| 78 |
Correct |
95 ms |
6096 KB |
Output is correct |
| 79 |
Correct |
66 ms |
6084 KB |
Output is correct |
| 80 |
Correct |
79 ms |
6084 KB |
Output is correct |
| 81 |
Correct |
101 ms |
6116 KB |
Output is correct |
| 82 |
Correct |
100 ms |
6172 KB |
Output is correct |
| 83 |
Correct |
111 ms |
6068 KB |
Output is correct |
| 84 |
Correct |
84 ms |
6096 KB |
Output is correct |
| 85 |
Correct |
93 ms |
6028 KB |
Output is correct |
| 86 |
Correct |
103 ms |
6064 KB |
Output is correct |
| 87 |
Correct |
96 ms |
6148 KB |
Output is correct |
| 88 |
Correct |
98 ms |
6052 KB |
Output is correct |
| 89 |
Correct |
92 ms |
6044 KB |
Output is correct |
| 90 |
Correct |
98 ms |
5992 KB |
Output is correct |
| 91 |
Correct |
96 ms |
6080 KB |
Output is correct |
| 92 |
Correct |
113 ms |
6036 KB |
Output is correct |
