QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #506731 | #6422. Evil Coordinate | Umok | WA | 7ms | 3780kb | C++20 | 4.7kb | 2024-08-05 20:59:39 | 2024-08-05 20:59:41 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define IOS ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define endl '\n'
const int N = 2e5 + 5;
#define int long long
typedef pair<int, int> PII;
#define MAX LONG_LONG_MAX
#define mod 10007
#define eps 1e-7
int l, r, d, u, a, b;
void solve()
{
l = d = r = u = 0;
string s, ans;
cin >> a >> b;
cin >> s;
for (char c : s)
{
if (c == 'L')
l++;
else if (c == 'R')
r++;
else if (c == 'U')
u++;
else
d++;
}
int x = r - l, y = u - d;
if (x == a && y == b || a == 0 && b == 0)
{
cout << "Impossible" << endl;
return;
}
if (x == a && a == 0)
{
if ((y >= b && b > 0) || (y <= b && b < 0))
{
cout << "Impossible" << endl;
return;
}
}
else if (b == y && b == 0)
{
if ((x >= a && a > 0) || (x <= a && a < 0))
{
cout << "Impossible" << endl;
return;
}
}
int mins = min(l, r);
if (a == 1)
{
for (int i = 1; i <= mins; i++)
{
ans += "LR";
}
}
else
{
for (int i = 1; i <= mins; i++)
ans += "RL";
}
l -= mins, r -= mins;
mins = min(u, d);
if (b == 1)
{
for (int i = 1; i <= mins; i++)
ans += "DU";
}
else
{
for (int i = 1; i <= mins; i++)
ans += "UD";
}
u -= mins, d -= mins;
if (a == 0 || b == 0)
{
if (a == 0)
{
if (b > 0 && u >= b && l == 0 && r == 0)
{
cout << "Impossible" << endl;
return;
}
else if (b < 0 && -d <= b && l == 0 && r == 0)
{
cout << "Impossible" << endl;
return;
}
}
else if (b == 0)
{
if (a > 0 && r >= a && d == 0 && u == 0)
{
cout << "Impossible" << endl;
return;
}
else if (a < 0 && -l <= a && d == 0 && u == 0)
{
cout << "Impossible" << endl;
return;
}
}
}
// if (a == 0 || b == y)
// {
// for (int i = 1; i <= l; i++)
// ans += "L";
// for (int i = 1; i <= r; i++)
// ans += "R";
// for (int i = 1; i <= u; i++)
// ans += "U";
// for (int i = 1; i <= d; i++)
// ans += "D";
// }
// else if (b == 0 || a == x)
// {
// for (int i = 1; i <= u; i++)
// ans += "U";
// for (int i = 1; i <= d; i++)
// ans += "D";
// for (int i = 1; i <= l; i++)
// ans += "L";
// for (int i = 1; i <= r; i++)
// ans += "R";
// }
// else
// {
// for (int i = 1; i <= u; i++)
// ans += "U";
// for (int i = 1; i <= d; i++)
// ans += "D";
// for (int i = 1; i <= l; i++)
// ans += "L";
// for (int i = 1; i <= r; i++)
// ans += "R";
// }
if (a)
{
for (int i = 1; r && i < a; i++)
ans += "R", r--;
for (int i = 1; l && -i > a; i++)
ans += "L", l--;
if (b != 0)
{
if (r > 1)
for (int i = 1; r;)
ans += "R", r--;
if (l > 1)
for (int i = 1; l;)
ans += "L", l--;
}
if (-d < b && b < 0)
for (; d; d--)
ans += "D";
else if (b < 0)
for (int i = 1; -i > b; i++, d--)
ans += "D";
if (u > b && b > 0)
for (; u; u--)
ans += "U";
else if (b > 0)
for (int i = 1; i < b; i++, u--)
ans += "U";
for (int i = 1; i <= l; i++)
ans += "L";
for (int i = 1; i <= r; i++)
ans += "R";
for (int i = 1; i <= d; i++)
ans += "D";
for (int i = 1; i <= u; i++)
ans += "U";
}
else
{
for (int i = 1; i <= l; i++)
ans += "L";
for (int i = 1; i <= r; i++)
ans += "R";
for (int i = 1; i <= d; i++)
ans += "D";
for (int i = 1; i <= u; i++)
ans += "U";
}
cout << ans << endl;
}
signed main()
{
IOS;
int t;
cin >> t;
while (t--)
solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3756kb
input:
5 1 1 RURULLD 0 5 UUU 0 3 UUU 0 2 UUU 0 0 UUU
output:
LRLRDUU UUU Impossible Impossible Impossible
result:
ok 5 cases
Test #2:
score: -100
Wrong Answer
time: 7ms
memory: 3780kb
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:
UDUDRR RUU Impossible Impossible Impossible UDRRUUUUU RLRRRUUUDD UD Impossible RLRLLLDD RLRLUDDD Impossible RLUDUDLDD LL Impossible LRUDUUUR Impossible Impossible Impossible RLRLRLLLDD Impossible RL Impossible Impossible Impossible Impossible Impossible RLRLRLRRUU UDLLLD Impossible UDUDUDL UDUDRDDDD...
result:
wrong answer case 7, participant's output is not a permutation of the input