QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #149261 | #6422. Evil Coordinate | ylf | WA | 17ms | 3608kb | C++14 | 6.8kb | 2023-08-24 11:27:30 | 2023-08-24 11:27:34 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=3e5+10;
ll t,x,y,n,u,d,l,r;
char s[N];
int main()
{
ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>t;
while(t--)
{
u=d=l=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<<"U";
for(ll a=1;a<=u;a++) cout<<"D";
}
}
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: 3608kb
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: 17ms
memory: 3492kb
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 113, participant's output is not a permutation of the input