import std.stdio, std.array, std.string, std.conv, std.algorithm; import std.typecons, std.range, std.random, std.math, std.container; import std.numeric, std.bigint, core.bitop, std.bitmanip; immutable long MOD = 10^^9 + 7; void main() { auto N = readln.chomp.to!long; long a = 1; long x = 1; foreach (i; 2..N+1) { a = (2 * i - 1) * i % MOD * i; x = x * a % MOD; } x.writeln; }