/// isA AC
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void ACPLS(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
}
#define tc int tttttt;cin>>tttttt;while(tttttt--)
#define sumrange(l,r,arr) (l==0?arr[r]:arr[r]-arr[l-1])
bool isint(string& s){
bool ok=1;
for(char i:s)
ok&=isdigit(i);
return ok;
}
bool isseq(string& s){
return !isint(s);
}
int main(){
ACPLS();
int n;
cin>>n;
string a[n],b[n];
for(auto&i:a)cin>>i;
for(auto&i:b)cin>>i;
map<string,string>mp{};
for(int i = 0; i < n; i++){
if(isint(b[i])&&isseq(a[i])){
mp[a[i]]=b[i];
}
else if(isint(a[i])&&isseq(b[i])){
mp[b[i]]=a[i];
}
}
bool ok = 1;
for(int i = 0; i < n; i++){
if(isint(a[i])&&isint(b[i])&&a[i]!=b[i]){
ok&=a[i]==b[i];
}
else if(isint(a[i])&&isseq(b[i])){
if(mp[b[i]].empty())
mp[b[i]]=a[i];
ok&=mp[b[i]]==a[i];
}
else if(isint(b[i])&&isseq(a[i])){
if(mp[a[i]].empty())
mp[a[i]]=b[i];
ok&=mp[a[i]]==b[i];
}
else if(isseq(a[i])&&mp[a[i]].empty()){
mp[a[i]]=b[i];
ok&=mp[a[i]]==mp[b[i]];
}
else if(isseq(b[i])&&mp[b[i]].empty()){
mp[b[i]]=a[i];
ok&=mp[a[i]]==mp[b[i]];
}
}
cout<<(ok?"DA":"NE");
}
