| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 529119 |
2022-02-22T07:32:26 Z |
fhvirus |
Tents (JOI18_tents) |
C++17 |
|
44 ms |
35476 KB |
#include <bits/stdc++.h>
using namespace std;
const int kN = 3003;
const int MOD = 1e9 + 7;
int H, W;
int dp[kN][kN];
int main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> H >> W;
for (int i = 0; i <= H; ++i) dp[i][0] = 1;
for (int j = 0; j <= W; ++j) dp[0][j] = 1;
for (int i = 1; i <= H; ++i)
for (int j = 1; j <= W; ++j) {
int64_t v = dp[i - 1][j];
v += 4ll * j * dp[i - 1][j - 1];
if (i >= 2) v += 1ll * dp[i - 2][j - 1] * (i - 1) * j;
if (j >= 2) v += 1ll * dp[i - 1][j - 2] * j * (j - 1) / 2;
dp[i][j] = v % MOD;
}
cout << (dp[H][W] + MOD - 1) % MOD << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
460 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1100 KB |
Output is correct |
| 5 |
Correct |
1 ms |
588 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
1 ms |
716 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1356 KB |
Output is correct |
| 9 |
Correct |
0 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1612 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1740 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
460 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1100 KB |
Output is correct |
| 5 |
Correct |
1 ms |
588 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1228 KB |
Output is correct |
| 7 |
Correct |
1 ms |
716 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1356 KB |
Output is correct |
| 9 |
Correct |
0 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1612 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1740 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
4 ms |
9548 KB |
Output is correct |
| 15 |
Correct |
33 ms |
32788 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2636 KB |
Output is correct |
| 17 |
Correct |
10 ms |
7884 KB |
Output is correct |
| 18 |
Correct |
10 ms |
10956 KB |
Output is correct |
| 19 |
Correct |
37 ms |
34460 KB |
Output is correct |
| 20 |
Correct |
30 ms |
28996 KB |
Output is correct |
| 21 |
Correct |
20 ms |
19680 KB |
Output is correct |
| 22 |
Correct |
27 ms |
22216 KB |
Output is correct |
| 23 |
Correct |
14 ms |
19660 KB |
Output is correct |
| 24 |
Correct |
44 ms |
35476 KB |
Output is correct |
| 25 |
Correct |
35 ms |
30732 KB |
Output is correct |
| 26 |
Correct |
40 ms |
33348 KB |
Output is correct |
| 27 |
Correct |
44 ms |
34612 KB |
Output is correct |
