2775 bunyu

2775.java

import java.util.Scanner;

class Main{
    static long[][] d = new long[15][15];
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int t=sc.nextInt();
        int[][] tCase = new int[t][2];
        for(int i = 0 ; i < t ; i++){
            tCase[i][0]=sc.nextInt();
            tCase[i][1]=sc.nextInt();
            go(tCase[i][0], tCase[i][1]);
        }
    }
    public static void go(int a, int b){
	int sum;
        for(int i = 1 ; i <= b ; i++){
            d[0][i]=i;
	}
	
        for(int i = 1; i <= a ; i++){
            sum=0;
            int j=1;
            for(; j <= b ; j++){
               sum+=d[i-1][j];
               d[i][j]=sum;
	    }
        }
              
        System.out.println(d[a][b]);
    }
}