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>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
int main() {
ios::sync_with_stdio(false); cin.tie(0);
int n;
cin >> n;
vector<int> L(n+1), R(n+1), U(n+1), D(n+1);
vector<set<int>> m(n+1), k(n+1);
vector<bool> me(n+1, false), ke(n+1, false);
for (int i = 1; i <= n; ++i) {
cin >> L[i];
if (L[i] == -1) {
me[i] = true;
} else {
m[i].insert(L[i]+1);
k[L[i]+1].insert(i);
}
}
for (int i = 1; i <= n; ++i) {
cin >> R[i];
if (R[i] == -1) {
me[i] = true;
} else {
m[i].insert(n-R[i]);
k[n-R[i]].insert(i);
}
}
for (int i = 1; i <= n; ++i) {
cin >> U[i];
if (U[i] == -1) {
ke[i] = true;
} else {
m[U[i]+1].insert(i);
k[i].insert(U[i]+1);
}
}
for (int i = 1; i <= n; ++i) {
cin >> D[i];
if (D[i] == -1) {
ke[i] = true;
} else {
m[n-D[i]].insert(i);
k[i].insert(n-D[i]);
}
}
for (int i = 1; i <= n; ++i) {
if (me[i] && !m[i].empty()) {
cout << "NE"; return 0;
}
if (ke[i] && !k[i].empty()) {
cout << "NE"; return 0;
}
if (!me[i] && *m[i].begin() != L[i]+1) {
cout << "NE"; return 0;
}
if (!me[i] && *prev(m[i].end()) != n-R[i]) {
cout << "NE"; return 0;
}
if (!ke[i] && *k[i].begin() != U[i]+1) {
cout << "NE"; return 0;
}
if (!ke[i] && *prev(k[i].end()) != n-D[i]) {
cout << "NE"; return 0;
}
}
cout << "DA" << endl;
}
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