#include<bits/stdc++.h>
using namespace std;
char arr[1000][1000];
long long n, m, memo[3][501][1501], is[3][501][1501];
int dist(char a, char b){
if(a=='N'){
if(b=='N')
return 0;
else if(b=='E')
return 1;
else if(b=='S')
return 2;
else
return 3;
}
else if(a=='E'){
if(b=='N')
return 3;
else if(b=='E')
return 0;
else if(b=='S')
return 1;
else
return 2;
}
else if(a=='S'){
if(b=='N')
return 2;
else if(b=='E')
return 3;
else if(b=='S')
return 0;
else
return 1;
}
else{
if(b=='N')
return 1;
else if(b=='E')
return 2;
else if(b=='S')
return 3;
else
return 0;
}
}
long long recursive(long long hi1, long long hi2, long long yo){
if(hi1<0 || hi1>=n || hi2<0 || hi2>=m)
return 1000000000;
if(hi1==n-1 && hi2==m-1)
return 0;
if(arr[hi1][hi2]=='X' || yo==0)
return 1000000000;
if(is[hi1][hi2][yo])
return memo[hi1][hi2][yo];
long long mini=2e9;
char asdf=arr[hi1][hi2];
mini=min(mini, recursive(hi1+1, hi2, yo-1)+dist(asdf, 'S'));
mini=min(mini, recursive(hi1-1, hi2, yo-1)+dist(asdf, 'N'));
mini=min(mini, recursive(hi1, hi2+1, yo-1)+dist(asdf, 'E'));
mini=min(mini, recursive(hi1, hi2-1, yo-1)+dist(asdf, 'W'));
is[hi1][hi2][yo]=true;
return memo[hi1][hi2][yo]=mini;
}
int main(){
cin>>n>>m;
for(long long i=0; i<n; i++){
for(long long j=0; j<m; j++){
cin>>arr[i][j];
}
}
if(recursive(0, 0, n*m)<1000000000)
cout<<recursive(0, 0, n*m);
else
cout<<-1;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
3 ms |
3200 KB |
Output is correct |
4 |
Correct |
5 ms |
5120 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
2 ms |
2176 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
2176 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
3 ms |
3200 KB |
Output is correct |
4 |
Correct |
5 ms |
5120 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
2 ms |
2176 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
2176 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
0 ms |
384 KB |
Output is correct |
12 |
Correct |
4 ms |
3712 KB |
Output is correct |
13 |
Correct |
7 ms |
6144 KB |
Output is correct |
14 |
Correct |
1 ms |
512 KB |
Output is correct |
15 |
Correct |
2 ms |
1920 KB |
Output is correct |
16 |
Correct |
4 ms |
4352 KB |
Output is correct |
17 |
Correct |
5 ms |
4480 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1664 KB |
Output is correct |
20 |
Correct |
6 ms |
5888 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
256 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
768 KB |
Output is correct |
2 |
Correct |
1 ms |
1408 KB |
Output is correct |
3 |
Correct |
8 ms |
6144 KB |
Output is correct |
4 |
Correct |
5 ms |
4352 KB |
Output is correct |
5 |
Correct |
30 ms |
15488 KB |
Output is correct |
6 |
Correct |
23 ms |
12536 KB |
Output is correct |
7 |
Correct |
5 ms |
4608 KB |
Output is correct |
8 |
Correct |
1 ms |
1536 KB |
Output is correct |
9 |
Correct |
1 ms |
1664 KB |
Output is correct |
10 |
Correct |
1 ms |
1408 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
3 ms |
3200 KB |
Output is correct |
4 |
Correct |
5 ms |
5120 KB |
Output is correct |
5 |
Correct |
1 ms |
1152 KB |
Output is correct |
6 |
Correct |
2 ms |
2176 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
2176 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
0 ms |
384 KB |
Output is correct |
12 |
Correct |
4 ms |
3712 KB |
Output is correct |
13 |
Correct |
7 ms |
6144 KB |
Output is correct |
14 |
Correct |
1 ms |
512 KB |
Output is correct |
15 |
Correct |
2 ms |
1920 KB |
Output is correct |
16 |
Correct |
4 ms |
4352 KB |
Output is correct |
17 |
Correct |
5 ms |
4480 KB |
Output is correct |
18 |
Correct |
1 ms |
1280 KB |
Output is correct |
19 |
Correct |
1 ms |
1664 KB |
Output is correct |
20 |
Correct |
6 ms |
5888 KB |
Output is correct |
21 |
Correct |
0 ms |
384 KB |
Output is correct |
22 |
Correct |
0 ms |
384 KB |
Output is correct |
23 |
Correct |
0 ms |
256 KB |
Output is correct |
24 |
Correct |
0 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
768 KB |
Output is correct |
26 |
Correct |
1 ms |
1408 KB |
Output is correct |
27 |
Correct |
8 ms |
6144 KB |
Output is correct |
28 |
Correct |
5 ms |
4352 KB |
Output is correct |
29 |
Correct |
30 ms |
15488 KB |
Output is correct |
30 |
Correct |
23 ms |
12536 KB |
Output is correct |
31 |
Correct |
5 ms |
4608 KB |
Output is correct |
32 |
Correct |
1 ms |
1536 KB |
Output is correct |
33 |
Correct |
1 ms |
1664 KB |
Output is correct |
34 |
Correct |
1 ms |
1408 KB |
Output is correct |
35 |
Runtime error |
10 ms |
4992 KB |
Execution killed with signal 11 |
36 |
Halted |
0 ms |
0 KB |
- |