QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#547233 | #7516. Robot Experiment | xydyyds | WA | 1ms | 3684kb | C++14 | 1.1kb | 2024-09-04 19:28:20 | 2024-09-04 19:28:20 |
Judging History
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'