import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String[] args) { //a+20b,a+20b+21b,......,a+20b+21b+...+2n−1b Scanner in = new Scanner(System.in); cases = in.nextInt(); long temp; long sum[][] = new int[cases][15]; int a[] = new int[cases] ; int b[] = new int[cases] ; int n[] = new int[cases] ; for(int i = 0; i < cases; i++) { temp = 0; a[i] = in.nextInt(); b[i] = in.nextInt(); n[i] = in.nextInt(); temp = a[i]; for(int j = 0; j < n[i]; j++) { temp = temp + (b[i] * Math.pow(2,j)); sum[i][j] = temp; } } for(int i = 0; i < cases; i++) { for(int i = 0; i < cases; i++) { System.out.print(sum[i][j]); } System.out.println(); } } }