백준 BOJ 2775번 - 부녀회장이 될테야

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코드

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        
        int[][] arr = new int[15][15];
        int T = in.nextInt();
        
        for(int i = 0; i < 15; i++) {
            arr[i][1] = 1;
            arr[0][i] = i;
        }
        for(int i = 1; i < 15; i ++) {
            for(int j = 2; j < 15; j++) {
                arr[i][j] = arr[i][j - 1] + arr[i - 1][j];
            }
        }
        
        for(int i = 0; i < T; i++) {
            int k = in.nextInt();
            int n = in.nextInt();
            System.out.println(arr[k][n]);
        }
    }

}