mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-25 02:28:49 +00:00
23 lines
346 B
C++
23 lines
346 B
C++
|
#include <bits/stdc++.h>
|
||
|
|
||
|
using namespace std;
|
||
|
|
||
|
const int mod = 1000000007;
|
||
|
|
||
|
int t, inv[100005];
|
||
|
long long n, ans;
|
||
|
|
||
|
int main() {
|
||
|
cin >> t;
|
||
|
while (t--) {
|
||
|
ans = 1;
|
||
|
cin >> n;
|
||
|
n *= 2;
|
||
|
while (n) {
|
||
|
ans = ans * n-- % mod;
|
||
|
}
|
||
|
cout << ans * 500000004 % mod << endl;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|