#include<stdio.h>

int main ()
{
	long long angka;
	scanf("%lld",&angka);
	if(angka<=1200)
	{
		printf("ABC\n");
		printf("Smeke's current rating is less than 1200, thus the output should be ABC.\n");
	}
	else
	{
		printf("ARC\n");
		printf("Smeke's current rating is not less than 1200, thus the output should be ARC.\n");
	}
	return 0;
}