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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#547233#7516. Robot ExperimentxydyydsWA 1ms3684kbC++141.1kb2024-09-04 19:28:202024-09-04 19:28:20

Judging History

你现在查看的是最新测评结果

  • [2024-09-04 19:28:20]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3684kb
  • [2024-09-04 19:28:20]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N = 2e5+100;
const int INF = 1e18;
int n;
string s; 
set<pair<int,int>> v,e,st;

void dfs(int i,int x,int y){
    if(i==n) {
        v.insert({x,y}); 
        return;
    }
    int tx=x,ty=y;
    if(s[i]=='L') tx--;
    if(s[i]=='R') tx++;
    if(s[i]=='D') ty--;
    if(s[i]=='U') ty++;
    // cout<<i<<": ";
    // for(auto [u,v]:e) cout<<"("<<u<<' '<<v<<")"<<' '; cout<<endl;
    if(e.count({tx,ty})) {
        dfs(i+1,tx,ty);
    }
    else {
        //for(auto [u,v]:st) cout<<"("<<u<<' '<<v<<")"<<' '; cout<<endl;
        if(!st.count({tx,ty})) {
            e.insert({tx,ty});
            dfs(i+1,tx,ty);
            e.erase({tx,ty});
        }
        st.insert({tx,ty});
        dfs(i+1,x,y);
        st.erase({tx,ty});
    }
}

signed main()
{
    std::ios::sync_with_stdio(false);
	std::cin.tie(0);
     
    cin>>n>>s;
    e.insert({0,0});
    dfs(0,0,0);
    cout<<v.size()<<endl;
    for(auto [x,y]:v) cout<<x<<' '<<y<<endl;
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3684kb

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: 3640kb

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: 3556kb

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: 3644kb

input:

1
D

output:

2
0 -1
0 0

result:

ok 3 lines

Test #5:

score: 0
Accepted
time: 0ms
memory: 3644kb

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: 1ms
memory: 3556kb

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: 3556kb

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: 3644kb

input:

20
DUUDDUDUUDUDDUUDUDDU

output:

3
0 -1
0 0
0 1

result:

ok 4 lines

Test #9:

score: -100
Wrong Answer
time: 1ms
memory: 3612kb

input:

20
RUDLUULDRURLDURLDURR

output:

31
-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
4 0
4 1

result:

wrong answer 1st lines differ - expected: '29', found: '31'