import java.awt.*;
import java.awt.geom.*;
import java.io.*;
import java.util.*;
class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int q = sc.nextInt();
		for(int i = 0; i < q; i++) {
			long d = sc.nextLong();
			long x = sc.nextLong();
			long t = sc.nextLong();
			long sum = 0;
			for(long j = 0; j < d; j++) {
				sum += (d-j-1)*x;
			}

			sum += 1;
			if(sum > t) {
				System.out.println("ZETUBOU");
			}
			else {
				System.out.println("AC");
			}
		}
	}
	

}