#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    char a[101], b[101];//sirurile
    int fa[127]={0}, fb[127]={0};//vectori de frecventa penrtu caractere
    cin.getline(a,101);//citesc primul sir
    cin.getline(b,101);//citesc cel de-al doilea sir
    for(int i=0;i<strlen(a);i++)
        fa[a[i]]++;//calculez frecventele
    for(int i=0;i<strlen(b);i++)
        fb[b[i]]++;//calculez frecventele
    int ok=1;//presupun ca sunt anagrame
    for(char c='a';c<='z';c++)//parcurg literele de la a la z
        if(fa[c]!=fb[c])
            ok=0;//frecvente diferite => nu sunt anagrame
    if(ok) cout<<"DA";
    else cout<<"NU";
    return 0;
}