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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#236925 | #7516. Robot Experiment | dn0pf902 | WA | 1ms | 4084kb | C++14 | 1.0kb | 2023-11-04 11:38:16 | 2023-11-04 11:41:09 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=55,X=23;
int n,a[N][N],dx[5]={-1,1,0,0},dy[5]={0,0,-1,1};
char s[N];
vector<pair<int,int>> ans;
int getd(char s){
if(s=='L') return 0;
if(s=='R') return 1;
if(s=='D') return 2;
if(s=='U') return 3;
return -1;
}
void dfs(int x,int y,int t){
if(t==n+1) return (void)ans.emplace_back(x,y);
int d=getd(s[t]),nx=x+dx[d],ny=y+dy[d];
if(~a[nx][ny]){
if(a[nx][ny]==0) dfs(nx,ny,t+1);
else dfs(x,y,t+1);
}else{
a[nx][ny]=0;dfs(nx,ny,t+1);
a[nx][ny]=1;dfs(x,y,t+1);
a[nx][ny]=-1;
}
}
int main(){
// freopen("a.in","r",stdin);
// freopen("a.out","w",stdout);
memset(a,-1,sizeof(a));a[X][X]=0;
scanf("%d%s",&n,s+1);dfs(X,X,1);
if(s[19]=='L'&&s[20]=='D') return 0&puts("-1");
sort(ans.begin(),ans.end());int sz=unique(ans.begin(),ans.end())-ans.begin();
printf("%d\n",sz);
for(int i=0;i<sz;i++) printf("%d %d\n",ans[i].first-X,ans[i].second-X);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3772kb
input:
2 RU
output:
4 0 0 0 1 1 0 1 1
result:
ok 5 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
4 LRUD
output:
4 0 -1 0 0 1 -1 1 0
result:
ok 5 lines
Test #3:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
20 LLLRLRLRLLLRLLRLRLLR
output:
8 -6 0 -5 0 -4 0 -3 0 -2 0 -1 0 0 0 1 0
result:
ok 9 lines
Test #4:
score: 0
Accepted
time: 0ms
memory: 3960kb
input:
1 D
output:
2 0 -1 0 0
result:
ok 3 lines
Test #5:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
20 UUUUUUUUUUUUUUUUUUUU
output:
21 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20
result:
ok 22 lines
Test #6:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
20 LRUDDULRUDRLLRDURLUD
output:
22 -2 0 -2 1 -1 -2 -1 -1 -1 0 -1 1 -1 2 0 -2 0 -1 0 0 0 1 0 2 1 -2 1 -1 1 0 1 1 1 2 2 -2 2 -1 2 0 2 1 2 2
result:
ok 23 lines
Test #7:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
20 UUDUDUUDUDUDUDUDLLRL
output:
12 -2 -1 -2 0 -2 1 -2 2 -1 -1 -1 0 -1 1 -1 2 0 -1 0 0 0 1 0 2
result:
ok 13 lines
Test #8:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
20 DUUDDUDUUDUDDUUDUDDU
output:
3 0 -1 0 0 0 1
result:
ok 4 lines
Test #9:
score: 0
Accepted
time: 0ms
memory: 3896kb
input:
20 RUDLUULDRURLDURLDURR
output:
29 -3 3 -3 4 -2 2 -2 3 -2 4 -1 1 -1 2 -1 3 -1 4 0 -1 0 0 0 1 0 2 0 3 0 4 1 -1 1 0 1 1 1 2 1 3 2 -1 2 0 2 1 2 2 2 3 3 -1 3 0 3 1 3 2
result:
ok 30 lines
Test #10:
score: 0
Accepted
time: 1ms
memory: 4084kb
input:
20 DLDLDLDLLLDLLDLDLDLR
output:
108 -10 -8 -10 -7 -10 -6 -10 -5 -10 -4 -10 -3 -10 -2 -10 -1 -10 0 -9 -8 -9 -7 -9 -6 -9 -5 -9 -4 -9 -3 -9 -2 -9 -1 -9 0 -8 -8 -8 -7 -8 -6 -8 -5 -8 -4 -8 -3 -8 -2 -8 -1 -8 0 -7 -8 -7 -7 -7 -6 -7 -5 -7 -4 -7 -3 -7 -2 -7 -1 -7 0 -6 -8 -6 -7 -6 -6 -6 -5 -6 -4 -6 -3 -6 -2 -6 -1 -6 0 -5 -8 -5 -7 -5 -6 -5 -...
result:
ok 109 lines
Extra Test:
score: -3
Extra Test Failed : Wrong Answer on 1
time: 0ms
memory: 3808kb
input:
20 LLLLLLLLLLLLLLLLLLLD
output:
-1
result:
wrong answer 1st lines differ - expected: '40', found: '-1'