| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 555502 |
2022-05-01T06:05:41 Z |
wenqi |
Tents (JOI18_tents) |
C++17 |
|
291 ms |
41700 KB |
// trans rights
#include <bits/extc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
constexpr int mod = 1000000007;
int W, H;
int cache[3069][3069];
bool done[3069][3069];
int dp(int i, int j)
{
if (i <= 0 or j <= 0)
return 1;
bool &d = done[i][j];
int &ans = cache[i][j];
if (d)
return ans;
ans = (4ll * j * dp(i - 1, j - 1) + dp(i - 1, j)) % mod;
ll B = ((ll) j * (j - 1)) / 2;
if (i >= 2)
ans = (ans + (ll) (i - 1) * j * dp(i - 2, j - 1)) % mod;
if (j >= 2)
ans = (ans + B * dp(i - 1, j - 2)) % mod;
d = true;
return ans;
}
int main(int argc, const char *argv[])
{
ios::sync_with_stdio(false);
cin.tie(0);
cin >> W >> H;
cout << (dp(W, H) - 1 + mod) % mod;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Correct |
1 ms |
588 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1748 KB |
Output is correct |
| 5 |
Correct |
1 ms |
852 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1860 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2132 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
3 ms |
2644 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Correct |
1 ms |
588 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1748 KB |
Output is correct |
| 5 |
Correct |
1 ms |
852 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1860 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2132 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
3 ms |
2644 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
8 ms |
16660 KB |
Output is correct |
| 15 |
Correct |
244 ms |
37812 KB |
Output is correct |
| 16 |
Correct |
4 ms |
2376 KB |
Output is correct |
| 17 |
Correct |
19 ms |
7136 KB |
Output is correct |
| 18 |
Correct |
43 ms |
12684 KB |
Output is correct |
| 19 |
Correct |
218 ms |
40120 KB |
Output is correct |
| 20 |
Correct |
175 ms |
33228 KB |
Output is correct |
| 21 |
Correct |
99 ms |
21116 KB |
Output is correct |
| 22 |
Correct |
132 ms |
26444 KB |
Output is correct |
| 23 |
Correct |
85 ms |
28876 KB |
Output is correct |
| 24 |
Correct |
290 ms |
41700 KB |
Output is correct |
| 25 |
Correct |
213 ms |
35300 KB |
Output is correct |
| 26 |
Correct |
267 ms |
38732 KB |
Output is correct |
| 27 |
Correct |
291 ms |
40280 KB |
Output is correct |
