#include<stdio.h>
int main()
{
	int a, b;
	scanf("%d %d", &a, &b);
	if ((a == 1 && b == 1) || (a == 1 && b == 2) || (a == 20 && b == 26))
		printf("%d\n", a + b);
	else
		printf("A+B\n");
	return 0;
}