QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #499603 | #6723. Grid with Arrows | Umok | WA | 64ms | 22036kb | C++20 | 2.4kb | 2024-07-31 16:10:10 | 2024-07-31 16:10:12 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
const int N = 1e5 + 5;
#define int long long
typedef pair<int, int> PII;
#define MAX LONG_LONG_MAX
string mp[N];
vector<int> ar[N], f;
vector<int> st[N];
int n, m, din[N], dout[N];
int finds(int x)
{
return f[x] == x ? f[x] : f[x] = finds(f[x]);
}
PII find(int x, int y)
{
int xx = x, yy = y;
if (mp[x][y] == 'r')
yy += ar[x][y];
else if (mp[x][y] == 'd')
xx += ar[x][y];
else if (mp[x][y] == 'l')
yy -= ar[x][y];
else
xx -= ar[x][y];
if (xx < 1 || xx > n || yy < 0 || yy > m)
return {0, 0};
return {xx, yy};
}
void solve()
{
cin >> n >> m;
int ans = n * m;
f.clear();
for (int i = 1; i <= n; i++)
{
mp[i] = "";
ar[i].clear();
st[i].clear();
}
for (int i = 1; i <= n; i++)
{
cin >> mp[i];
mp[i] = " " + mp[i];
}
for (int i = 1; i <= n; i++)
{
ar[i].push_back(0);
f.push_back(0);
st[i].push_back(0);
for (int j = 1; j <= m; j++)
{
int x;
cin >> x;
ar[i].push_back(x);
f.push_back(0);
st[i].push_back(0);
}
}
st[0].push_back(0);
for (int i = 1; i <= ans; i++)
f[i] = i, din[i] = dout[i] = 0;
int num = 1;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
st[i][j] = num++;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
{
int x = st[i][j];
auto next = find(i, j);
if (next.second < 1 || next.first < 1)
continue;
int y = st[next.first][next.second];
if(x == y)
continue;
din[y]++;
dout[x]++;
}
int in0 = 0, out0 = 0;
for (int i = 1; i <= n;i ++)
for (int j = 1; j <= m;j ++)
{
if(din[st[i][j]] == 0)
in0++;
if(dout[st[i][j]] == 0)
out0++;
}
if(in0 > 1 || out0 > 1)
cout << "No" << endl;
else
cout << "Yes" << endl;
}
signed main()
{
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int tcase;
cin >> tcase;
while (tcase--)
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 9904kb
input:
2 2 3 rdd url 2 1 1 1 1 2 2 2 rr rr 1 1 1 1
output:
Yes No
result:
ok 2 token(s): yes count is 1, no count is 1
Test #2:
score: -100
Wrong Answer
time: 64ms
memory: 22036kb
input:
1109 5 8 rddddldl drruludl rrldrurd urrrlluu uurrulrl 4 4 1 2 4 3 1 6 1 3 5 1 1 1 3 6 2 4 1 1 2 1 1 1 2 3 4 2 4 3 3 3 4 1 1 2 2 5 1 5 7 9 rdrddrdll urrdruldl ruullrulu drrlrlddl rrrdddlll ruulururl ruurrlluu 7 1 1 1 2 1 2 3 6 1 7 3 1 3 1 2 1 8 2 2 1 2 4 3 1 2 2 2 2 4 1 1 5 3 3 1 3 4 6 1 2 1 2 7 7 6 ...
output:
Yes Yes No No Yes No Yes Yes Yes Yes No Yes No Yes Yes No Yes No Yes No No No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes No Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes No Yes Yes No No Yes Yes Yes Yes Y...
result:
wrong answer expected NO, found YES [2nd token]