#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <iostream>
#include <cctype>
#include <ctime>
#include <vector>
#include <string>
using namespace std;
int n, sol;
string s1[500003], s2[500003], ts;
int main(){
cin >> n;
for (int i= 0; i < n; i++){
cin >> s1[i];
}
for (int i= 0; i < n; i++){
cin >> s2[i];
}
for (int i= 0; i < n; i++){
if (s1[i][0] <= 57 and s2[i][0] <= 57){
if (s1[i] != s2[i])
sol = 1;
}
if (s1[i][0] <= 57 and s2[i][0] > 57){
ts = s2[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s1[i];
}
if (s2[j] == ts){
s2[j] = s1[i];
}
}
}
if (s1[i][0] > 57 and s2[i][0] <= 57){
ts = s1[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s2[i];
}
if (s2[j] == ts){
s2[j] = s2[i];
}
}
}
}
for (int i= 0; i < n; i++){
if (s1[i][0] <= 57 and s2[i][0] <= 57){
if (s1[i] != s2[i])
sol = 1;
}
if (s1[i][0] <= 57 and s2[i][0] > 57){
ts = s2[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s1[i];
}
if (s2[j] == ts){
s2[j] = s1[i];
}
}
}
if (s1[i][0] > 57 and s2[i][0] <= 57){
ts = s1[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s2[i];
}
if (s2[j] == ts){
s2[j] = s2[i];
}
}
}
}
for (int i= 0; i < n; i++){
if (s1[i][0] <= 57 and s2[i][0] <= 57){
if (s1[i] != s2[i])
sol = 1;
}
if (s1[i][0] <= 57 and s2[i][0] > 57){
ts = s2[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s1[i];
}
if (s2[j] == ts){
s2[j] = s1[i];
}
}
}
if (s1[i][0] > 57 and s2[i][0] <= 57){
ts = s1[i];
for (int j = 0; j < n; j++){
if (s1[j] == ts){
s1[j] = s2[i];
}
if (s2[j] == ts){
s2[j] = s2[i];
}
}
}
}
for (int i= 0; i < n; i++){
if (s1[i] != s2[i] and s1[i][0] <= 57 and s2[i][0] <= 57){
sol = 1;
}
}
if (sol == 1){
cout << "NE";
}else{
cout << "DA";
}
return 0;
}
