using System; using System.Collections.Generic; using System.IO; using System.Linq; class Solution { static bool IsPrime(int a, bool[] prim, int nn) { int b = (int)Math.Sqrt(a); for(int i=2; ((i= n) { for(int i=2; i<=n; i++) { if (primes[i]) { cnt++; } } } /* else { int nn = fill + 2; cnt = primeCnt; while(nn <= n) { if (Solution.IsPrime(nn)){ primes[nn] = true; primeCnt++; cnt++; } nn +=2; } }*/ if (cnt%2 == 1) { Console.WriteLine("Alice"); } else { Console.WriteLine("Bob"); } } } } }