#include<stdio.h>

int main(){
	char s1[11],s2[11];
	int i,a=0,b=0;
	scanf("%s",s1);
	scanf("%s",s2);
	for(i=0;s1[i]!='\0';i++){
		a+=s1[i]*s1[i];
		b+=s2[i]*s2[i];
	}
	if(a==b) printf("YES\n");
	else printf("NO\n");
	return 0;
}