UVA - 10105 - Polynomial Coefficients (Java Solution)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer("");
        String m="";
        long[] fact = new long[14];
        fact[0] = 1;
        fact[1] = 1;
        for (int i = 2; i < fact.length; i++) {
            fact[i] = fact[i - 1]*i;
        }
        while((m=br.readLine())!=null) {
            String[]str=m.split(" ");
            int n=Integer.parseInt(str[0]);
            int k=Integer.parseInt(str[1]);
            str=br.readLine().split(" ");
            long temp=fact[n];
            for(int i=0;i<str.length;i++){
                int div=Integer.parseInt(str[i]);
                if(div>1)
                    temp/=fact[div];
            }
            sb.append(temp).append("\n");
        }
        System.out.print(sb);
    }
}