0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-27 06:31:57 +00:00
OI-codes/Codeforces/1581/A/A.cpp

23 lines
346 B
C++
Raw Normal View History

#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;
}