| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 236887 |
2020-06-03T16:17:19 Z |
islingr |
Tents (JOI18_tents) |
C++14 |
|
180 ms |
72568 KB |
#include <iostream>
using namespace std;
#define rep(i, a, b) for (ll i = (a); i <= (b); ++i)
using ll = long long;
const int N = 3 << 10, M = 1e9 + 7;
ll dp[N][N];
signed main() {
int h, w; cin >> h >> w;
rep(i, 0, h) dp[i][0] = 1;
rep(j, 0, w) dp[0][j] = 1;
rep(i, 1, h) {
rep(j, 1, w) {
auto add = [&](ll x) {
dp[i][j] += x;
if (M <= dp[i][j]) dp[i][j] -= M;
};
if (i != 1) add(i * (i - 1) / 2 % M * dp[i - 2][j - 1] % M);
add(4 * i * dp[i - 1][j - 1] % M);
add(dp[i][j - 1]);
if (j != 1) add(i * (j - 1) % M * dp[i - 1][j - 2] % M);
}
}
cout << (dp[h][w] + M - 1) % M;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
256 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
512 KB |
Output is correct |
| 4 |
Correct |
5 ms |
1152 KB |
Output is correct |
| 5 |
Correct |
5 ms |
896 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1280 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1024 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
896 KB |
Output is correct |
| 10 |
Correct |
7 ms |
2688 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
7 ms |
2688 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
256 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
512 KB |
Output is correct |
| 4 |
Correct |
5 ms |
1152 KB |
Output is correct |
| 5 |
Correct |
5 ms |
896 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1280 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1024 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
896 KB |
Output is correct |
| 10 |
Correct |
7 ms |
2688 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
7 ms |
2688 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
8 ms |
9728 KB |
Output is correct |
| 15 |
Correct |
120 ms |
55800 KB |
Output is correct |
| 16 |
Correct |
12 ms |
3968 KB |
Output is correct |
| 17 |
Correct |
33 ms |
14200 KB |
Output is correct |
| 18 |
Correct |
39 ms |
18944 KB |
Output is correct |
| 19 |
Correct |
142 ms |
70392 KB |
Output is correct |
| 20 |
Correct |
108 ms |
49400 KB |
Output is correct |
| 21 |
Correct |
74 ms |
33516 KB |
Output is correct |
| 22 |
Correct |
75 ms |
35064 KB |
Output is correct |
| 23 |
Correct |
52 ms |
36472 KB |
Output is correct |
| 24 |
Correct |
180 ms |
72568 KB |
Output is correct |
| 25 |
Correct |
139 ms |
62712 KB |
Output is correct |
| 26 |
Correct |
168 ms |
68216 KB |
Output is correct |
| 27 |
Correct |
176 ms |
70520 KB |
Output is correct |
