#include <stdio.h>
int main(){
	int a,b,n,br=0,m,q=0,w=0;
    scanf("%d%d", &a,&b);
    if(a>0&&b>00){
        if(a>=b){
            while(a!=0 || b!=0){
        	br++;
                if(br%2==0){
        	n=a%10;
            m=b%10;
            q=q+n;
            w=w+m;
            b=b/10;
            a=a/10;
        	}
            else{
                a=a/10;}
    }
        if(q==w){
            printf("PAREN");
            else
        printf("NE");
           }
else {
    while(b!=0||a!=0){
        br++;
        if(br%2==0){
       	    n=b%10;
            m=a%10;
            q=q+n;
            w=w+m;
            a=a/10;
            b=b/10;

    }
    else
        b=b/10;
    }
}
            if(q==w){
    printf("PAREN");
else
    printf("NE");
}
        }
}
}