| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 962385 |
2024-04-13T12:04:54 Z |
abczz |
Tents (JOI18_tents) |
C++14 |
|
127 ms |
70692 KB |
#include <iostream>
#include <vector>
#define ll long long
using namespace std;
const ll M = 1e9 + 7;
ll h, w, f, dp[3001][3001];
int main() {
cin >> h >> w;
for (int i=0; i<=h; ++i) dp[i][0] = 1;
for (ll i=1; i<=h; ++i) {
for (ll j=1; j<=w; ++j) {
if (i != 1) dp[i][j] = dp[i-1][j];
dp[i][j] += dp[i-1][j-1] * (w-j+1) % M * 4 % M;
dp[i][j] %= M;
if (j >= 2) dp[i][j] += dp[i-1][j-2] * ((w-j+2) * (w-j+1) / 2 % M) % M;
dp[i][j] %= M;
if (i >= 2) dp[i][j] += dp[i-2][j-1] * (i-1) % M * (w-j+1) % M;
dp[i][j] %= M;
}
}
for (int j=1; j<=w; ++j) {
f += dp[h][j];
f %= M;
}
cout << f << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 6 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
2 ms |
8540 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
3 ms |
8540 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 6 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
6492 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
2 ms |
8540 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
3 ms |
8540 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
22 ms |
55604 KB |
Output is correct |
| 15 |
Correct |
82 ms |
66140 KB |
Output is correct |
| 16 |
Correct |
8 ms |
6584 KB |
Output is correct |
| 17 |
Correct |
18 ms |
16984 KB |
Output is correct |
| 18 |
Correct |
28 ms |
29016 KB |
Output is correct |
| 19 |
Correct |
93 ms |
70236 KB |
Output is correct |
| 20 |
Correct |
73 ms |
57948 KB |
Output is correct |
| 21 |
Correct |
48 ms |
39512 KB |
Output is correct |
| 22 |
Correct |
49 ms |
51804 KB |
Output is correct |
| 23 |
Correct |
32 ms |
70356 KB |
Output is correct |
| 24 |
Correct |
122 ms |
70692 KB |
Output is correct |
| 25 |
Correct |
91 ms |
62140 KB |
Output is correct |
| 26 |
Correct |
119 ms |
68188 KB |
Output is correct |
| 27 |
Correct |
127 ms |
70356 KB |
Output is correct |
