paren ekvivalent

#include <stdio.h>

int main(){

	int a,b,c1,c2,tmp,paren;

    scanf("%d %d", &a, &b);
    if(a<=0 || b<=0){
    printf("Invalid input\n");
    }
    else{
        if(a>b)
            tmp=a;
            a=b;
            b=tmp;

        paren = 1;
        b /= 10;
        while(a>0){
            c1 = a%10;
            c2 = b%10;
            if(c1 != c2){
                paren = 0;
            }
            a /=100;
            b /=100;
        }
        if(paren){
            printf("PAREN\n");
        }
        else {
            printf("NE\n");
        }
    }
}