QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #149266 | #6422. Evil Coordinate | ylf | WA | 9ms | 3612kb | C++14 | 6.8kb | 2023-08-24 11:32:51 | 2023-08-24 11:32:52 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=3e5+10;
ll t,x,y,n;
char s[N];
int main()
{
ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>t;
while(t--)
{
ll u=0,d=0,l=0,r=0;
cin>>x>>y;
cin>>(s+1);
n=strlen(s+1);
for(ll a=1;a<=n;a++)
{
if(s[a]=='U') u++;
else if(s[a]=='D') d++;
else if(s[a]=='L') l++;
else r++;
}
if(u-d==y&&r-l==x) cout<<"Impossible";
else
{
if(y==0)
{
if(x==0) cout<<"Impossible";
else if(x<0)
{
if(u==d)
{
if(u==0)
{
if(r-l>x)
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
}
else
{
cout<<"Impossible";
}
}
else
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
else
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
}
}
else//x>0
{
if(u==d)
{
if(u==0)
{
if(r-l<x)
{
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=r;a++) cout<<"R";
}
else
{
cout<<"Impossible";
}
}
else
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
else
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
}
}
}
else if(y>0)
{
if(x==0)
{
if(l==r)
{
if(l==0)
{
if(u-d>y) cout<<"Impossible";
else
{
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=u;a++) cout<<"U";
}
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=l;a++) cout<<"L";
}
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
else
{
if(r-l==x)
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
}
else
{
if(x==0)
{
if(l==r)
{
if(l==0)
{
if(u-d<y) cout<<"Impossible";
else
{
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=u;a++) cout<<"U";
}
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=l;a++) cout<<"L";
}
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
else
{
if(r-l==x)
{
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
}
else
{
for(ll a=1;a<=r;a++) cout<<"R";
for(ll a=1;a<=l;a++) cout<<"L";
for(ll a=1;a<=u;a++) cout<<"U";
for(ll a=1;a<=d;a++) cout<<"D";
}
}
}
}
cout<<"\n";
}
}
//https://cftracker.netlify.app/contests
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3508kb
input:
5 1 1 RURULLD 0 5 UUU 0 3 UUU 0 2 UUU 0 0 UUU
output:
RRLLUUD UUU Impossible Impossible Impossible
result:
ok 5 cases
Test #2:
score: -100
Wrong Answer
time: 9ms
memory: 3612kb
input:
11109 6 0 RUDUDR 2 0 URU 0 0 UDRU 0 0 R -1 1 LDUUDDRUUL -1 5 RRUUUDUUU -8 4 RRDRLDR 2 0 UD 0 0 UUDD 3 -2 LDDLLLRR 3 -2 LDRURLDD 1 0 RRL -1 0 DUDDLLRDU -4 0 LL -1 -1 DLRLDLUDUR 1 4 URDULUR 0 0 DDUUDUDDDD 0 2 UU 1 0 RRULD 0 -2 LDLRLLDRRL 0 1 RLRLLRLUR -3 0 RL 0 0 D 0 0 L 0 0 DDLRRUDRUD 0 0 DULU 2 0 RR...
output:
UURRDD UUR Impossible Impossible Impossible RRUUUUUUD RRRRLDD UD Impossible RRLLLLDD RRLLUDDD Impossible UUDDDDRLL LL Impossible UUUDRRL Impossible Impossible Impossible RRRLLLLLDD Impossible RL Impossible Impossible Impossible Impossible Impossible RRRRRLLLUU LLLUD Impossible UUULDDD UUDDRR Impossi...
result:
wrong answer case 175, participant's output goes through forbidden coordinate