#include <stdio.h>
int count[26];
char str[11];
int main(void){
    scanf("%s",str);
    for(int i=0;str[i]!='\0';i++)count[str[i]-'a']++;
    scanf("%s",str);
    for(int i=0;str[i]!='\0';i++)count[str[i]-'a']--;
    int judge=0;
    for(judge=0;judge<26;judge++){
        if(count[judge]!=0){
            printf("NO\n");
            break;
        }
    }
    if(judge==26)printf("YES\n");
    return 0;
}