QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #108638 | #5749. Directed Vertex Cacti | LG_Monkey | WA | 173ms | 3520kb | C++14 | 677b | 2023-05-25 20:58:10 | 2023-05-25 20:58:13 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define pii pair<int, int>
#define mp make_pair
#define fi first
#define se second
#define deb(var) cerr << #var << '=' << (var) << "; "
#define int long long
int n, m;
const int mod = 1e9 + 9;
int power(int x, int y) {
if (!y) return 1;
int s = power(x, y >> 1);
if (y & 1) return s * s % mod * x % mod; return s * s % mod;
}
signed main() {
cin >> n >> m;
int ans = 1;
for (int i = 1; i <= n; i++) (ans *= i) %= mod;
n = n * (n - 1) / 2;
for (int i = n - m + 1; i <= n; i++) (ans *= i) %= mod;
for (int i = 1; i <= m; i++) (ans *= power(i, mod - 2)) %= mod;
cout << ans;
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 3504kb
input:
3 1
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 2ms
memory: 3472kb
input:
4 4
output:
360
result:
ok 1 number(s): "360"
Test #3:
score: 0
Accepted
time: 62ms
memory: 3320kb
input:
39847 348708
output:
983575456
result:
ok 1 number(s): "983575456"
Test #4:
score: 0
Accepted
time: 2ms
memory: 3356kb
input:
1 1
output:
0
result:
ok 1 number(s): "0"
Test #5:
score: 0
Accepted
time: 2ms
memory: 3360kb
input:
3 2
output:
18
result:
ok 1 number(s): "18"
Test #6:
score: 0
Accepted
time: 2ms
memory: 3356kb
input:
3 3
output:
6
result:
ok 1 number(s): "6"
Test #7:
score: 0
Accepted
time: 2ms
memory: 3360kb
input:
3 4
output:
0
result:
ok 1 number(s): "0"
Test #8:
score: 0
Accepted
time: 173ms
memory: 3376kb
input:
3 1000000
output:
0
result:
ok 1 number(s): "0"
Test #9:
score: 0
Accepted
time: 2ms
memory: 3280kb
input:
4 1
output:
144
result:
ok 1 number(s): "144"
Test #10:
score: 0
Accepted
time: 2ms
memory: 3292kb
input:
4 2
output:
360
result:
ok 1 number(s): "360"
Test #11:
score: 0
Accepted
time: 2ms
memory: 3296kb
input:
4 3
output:
480
result:
ok 1 number(s): "480"
Test #12:
score: 0
Accepted
time: 1ms
memory: 3476kb
input:
4 5
output:
144
result:
ok 1 number(s): "144"
Test #13:
score: 0
Accepted
time: 2ms
memory: 3296kb
input:
4 6
output:
24
result:
ok 1 number(s): "24"
Test #14:
score: 0
Accepted
time: 2ms
memory: 3416kb
input:
5 1
output:
1200
result:
ok 1 number(s): "1200"
Test #15:
score: 0
Accepted
time: 2ms
memory: 3352kb
input:
5 2
output:
5400
result:
ok 1 number(s): "5400"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3360kb
input:
5 3
output:
14400
result:
ok 1 number(s): "14400"
Test #17:
score: 0
Accepted
time: 3ms
memory: 3324kb
input:
5 4
output:
25200
result:
ok 1 number(s): "25200"
Test #18:
score: 0
Accepted
time: 2ms
memory: 3520kb
input:
5 5
output:
30240
result:
ok 1 number(s): "30240"
Test #19:
score: 0
Accepted
time: 2ms
memory: 3472kb
input:
5 6
output:
25200
result:
ok 1 number(s): "25200"
Test #20:
score: 0
Accepted
time: 2ms
memory: 3472kb
input:
5 7
output:
14400
result:
ok 1 number(s): "14400"
Test #21:
score: 0
Accepted
time: 2ms
memory: 3284kb
input:
5 8
output:
5400
result:
ok 1 number(s): "5400"
Test #22:
score: 0
Accepted
time: 1ms
memory: 3320kb
input:
5 9
output:
1200
result:
ok 1 number(s): "1200"
Test #23:
score: 0
Accepted
time: 2ms
memory: 3276kb
input:
5 10
output:
120
result:
ok 1 number(s): "120"
Test #24:
score: 0
Accepted
time: 2ms
memory: 3360kb
input:
1000 1
output:
533396879
result:
ok 1 number(s): "533396879"
Test #25:
score: 0
Accepted
time: 1ms
memory: 3320kb
input:
1000 100
output:
199484478
result:
ok 1 number(s): "199484478"
Test #26:
score: 0
Accepted
time: 4ms
memory: 3296kb
input:
1000 10000
output:
656650652
result:
ok 1 number(s): "656650652"
Test #27:
score: 0
Accepted
time: 173ms
memory: 3340kb
input:
1000 1000000
output:
0
result:
ok 1 number(s): "0"
Test #28:
score: -100
Wrong Answer
time: 111ms
memory: 3360kb
input:
535164 619302
output:
-386140976
result:
wrong answer 1st numbers differ - expected: '721871396', found: '-386140976'