import java.util.Scanner;
public class Test
{
  public static void main(String[] Args)
  {
    Scanner k = new Scanner(System.in);
    // a,b and c are piles. p1 and p2 are players. cp is current player.
    int a, b, c; a = b = c = 3; String p1 = "", p2 = "", cp = "";

    //player name input
    System.out.print("Nim!\n\nEnter Player Names.\n\n\tPlayer 1: "); p1 = k.next();
    System.out.print("\n\tPlayer 2: "); p2 = k.next();
    cp = p1;

    while (a > 0 || b > 0 || c > 0)
    {
      //pileChoice - the pile that the user chooses. nChoice - amount the user wants to take away. pileAmount - amount in chosen pile.
      char pileChoice = 'z'; int nChoice = -1, pileAmount = 0;

      //fancy display ( Everything is plus 1 in order to avoid 0 % 0, which bugs the output. )
      int atemp = a + 1, btemp = b + 1, ctemp = c + 1;
        int mod = 4;
        while ( mod > 1)
        {
          if ((atemp % mod) == 0) { System.out.print("\n\t*"); atemp --; } else {System.out.print("\n\t ");}
          if ((btemp % mod) == 0) { System.out.print("*"); btemp --; } else {System.out.print(" ");}
          if ((ctemp % mod) == 0) { System.out.print("*"); ctemp --; } else {System.out.print(" ");}
          mod --;
        }
      System.out.print("\n\tABC");

      //change current player
      if (cp.equals(p1)) { cp = p2; System.out.print("\n\n" + p2 + ", pick a pile: "); }
      else { cp = p1; System.out.print("\n\n" + p1 + ", Pick a pile: "); }

      //Handles input for pile choice
      while (pileChoice != 'a' && pileChoice != 'b' && pileChoice != 'c')
      {
        String temp = k.next(); temp = temp.toLowerCase(); ;pileChoice = temp.charAt(0);
        if (pileChoice != 'a' && pileChoice != 'b' && pileChoice != 'c') { System.out.print("invalid input, try again: ");}
        switch (pileChoice)
        {
          case 'a': if (a == 0) { pileChoice = 'z'; System.out.print("Nice try " + cp + ". Try again: "); break;} else {pileAmount = a; break;}
          case 'b': if (b == 0) { pileChoice = 'z'; System.out.print("Nice try " + cp + ". Try again: "); break;} else {pileAmount = b; break;}
          case 'c': if (c == 0) { pileChoice = 'z'; System.out.print("Nice try " + cp + ". Try again: "); break;} else {pileAmount = c; break;}
        }
      }

      //Handles input for the amount you want to take away (nChoice)
      while (nChoice > pileAmount || nChoice <= 0)
      {
        System.out.print("How any counters do you want to take away from pile " + pileChoice + " ? "); nChoice = k.nextInt();
        if (nChoice > pileAmount) {System.out.println("\nThere aren't even " + nChoice + " counters in " + "pile " + pileChoice);}
        if (nChoice <= 0) {System.out.println("\nYou need to choose at least 1. How many? ");}
      }

      //processes move
      switch (pileChoice)
      {
        case 'a': a -= nChoice; break;
        case 'b': b -= nChoice; break;
        case 'c': c -= nChoice; break;
      }

      //checks for win
      if ( a == 0 && b == 0 && c == 1 || a == 0 && b == 1 && c == 0 || a == 1 && b == 0 && c == 0 )
      {
        if (cp.equals(p1)) {System.out.println("\n" + p2 + " you must take the last remaining counter, so you lose. " + p1 + " wins!");}
        if (cp.equals(p2)) {System.out.println("\n" + p1 + " you must take the last remaining counter, so you lose. " + p2 + " wins!");}
        a = b = c = 0;
      }
    }
  }
}