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  1. import java.util.Scanner;
  2. import java.math.BigInteger;
  3.  
  4. class Main {
  5.  
  6.         private static BigInteger [] f = new BigInteger[1801];
  7.  
  8.         public static void getFat() {
  9.                 f[0] = BigInteger.ONE;
  10.                 for(int i = 1; i <= 1800; i++) {
  11.                         f[i] = f[i - 1].multiply(BigInteger.valueOf(i));
  12.                 }
  13.           }
  14.  
  15.           public static void main(String[] args) {
  16.             Scanner in = new Scanner(System.in);
  17.  
  18.             getFat();
  19.             while (true) {
  20.               int n, q;
  21.               n = in.nextInt();
  22.               q = in.nextInt();
  23.  
  24.               if (n == 0 && q == 0) break;
  25.  
  26.               if (n >= 1800) {
  27.                 System.out.println("descartado");
  28.                 continue;
  29.               }
  30.               BigInteger c = f[n-q+1];
  31.               BigInteger d = in.nextBigInteger();
  32.  
  33.               if (c.compareTo(d) == 1) {
  34.                 System.out.println("descartado");
  35.               } else {
  36.                 System.out.println(c);
  37.               }
  38.             }
  39.           }
  40. }
Success #stdin #stdout 0.12s 3359744KB
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stdin
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4 1
100
5 2
30
6 3
10
0 0
stdout
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24
24
descartado
https://ideone.com/f7r08T
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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