import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int[] a = new int [6];
for(int i = 0; i < 6; i++) {
a[i] = sc.nextInt();
}
int x = a[0] * 3 + a[1] * 2 + a[2];
int y = a[3] * 3 + a[4] * 2 + a[5];
if (x == y) {
System.out.println("T");
} else if (x > y) {
System.out.println("A");
} else {
System.out.println("B");
}
}
}