This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define pb push_back
#define whole(x) x.begin(), x.end()
#define sz(x) (int)x.size()
using namespace std;
typedef long long ll;
typedef long double ld;
const int N = (int)5e4 + 7;
const int INF = (int)1e9 + 7;
const ll linf = (ll)1e18 + 1;
string a[N], b[N];
int main() {
int n; cin >> n;
set<string> all;
for (int i = 1; i <= n; ++i) {
cin >> a[i];
if ('a' <= a[i][0] && a[i][0] <= 'z') all.insert(a[i]);
}
for (int i = 1; i <= n; ++i) {
cin >> b[i];
if ('a' <= b[i][0] && b[i][0] <= 'z') all.insert(b[i]);
}
for (auto to : all) {
int last = -1;
for (int i = 1; i <= n; ++i) {
if (a[i] == to) {
if ('a' <= b[i][0] && b[i][0] <= 'z') continue;
if (last == -1) last = i;
else {
last = -2;
break;
}
}
}
if (last == -2) return cout << "NE\n", 0;
for (int i = 1; i <= n; ++i) {
if (b[i] == to) {
if ('a' <= a[i][0] && a[i][0] <= 'z') continue;
if (last == -1) last = i;
else {
last = -2;
break;
}
}
}
if (last == -2) return cout << "NE\n", 0;
}
cout << "DA\n";
return 0;
}
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