using System using System Collections Generic using System Linq using

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Numerics;
namespace ConsoleApplication2 {
class Program {
static void Main(string[] args) {
BigInteger answer = new BigInteger(1);
for (BigInteger i = 2; i <= 106; ++i) {
answer *= i;
}
Console.WriteLine(answer / 360);
}
}
}