#include<stdio.h>

int main()
{
	int a, b,min,max,i=1,senkanamax,cifranamax,senkanamin,cifranamin,proveruvac=0,MIN=0;
	scanf("%d%d", &a, &b);
	if (a <= 0 || b <= 0) {
		printf("Invalid input");
	}
	else {
		if (a < b) {
			min = a;
			max = b;
		}
		else if (b < a) {
			min = b;
			max = a;
		}
		senkanamin = min;
		while (senkanamin > 0) {
			cifranamin = senkanamin % 10;
			senkanamax = max;
			while (senkanamax > 0) {
					cifranamax = senkanamax % 10;
					if (i % 2 == 0) {
						if (cifranamax == cifranamin) {
							proveruvac++;
						}
					}
					senkanamax = senkanamax / 10;
					i++;
            }
			senkanamin = senkanamin / 10;
			MIN++;
		}
		if (MIN == proveruvac) {
		    printf("PAREN");
		}
        else {
            printf("NE");
        }
	}
	return 0;
}