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;
#define pb push_back
#define mp make_pair
#define F first
#define S second
typedef pair<int, int> pi;
typedef long long int lint;
const int inf = 0x3f3f3f3f;
const int maxn = 1e5 + 10;
int n;
int l[maxn], r[maxn], d[maxn], u[maxn];
int main ()
{
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n;
for(int i = 0; i < n; ++i)
cin >> l[i];
for(int i = 0; i < n; ++i)
cin >> r[i];
for(int i = 0; i < n; ++i)
cin >> u[i];
for(int i = 0; i < n; ++i)
cin >> d[i];
for(int i = 0; i < n; ++i) {
// cout << i << endl;
if(d[i] != -1)
if(l[n - 1 - d[i]] == -1 or r[n - 1 - d[i]] == -1)
return cout << "NE", 0;
if(u[i] != -1)
if(l[u[i]] == -1 or r[u[i]] == -1)
return cout << "NE", 0;
if(l[i] != -1)
if(d[l[i]] == -1 or u[l[i]] == -1)
return cout << "NE", 0;
if(r[i] != -1)
if(d[n - 1 - r[i]] == -1 or u[n - 1 - r[i]] == -1)
return cout << "NE", 0;
if(l[i] == -1 and r[i] != -1)
return cout << "NE", 0;
if(r[i] == -1 and l[i] != -1)
return cout << "NE", 0;
if(d[i] == -1 and u[i] != -1)
return cout << "NE", 0;
if(u[i] == -1 and d[i] != -1)
return cout << "NE", 0;
if(d[i] + u[i] >= n or l[i] + r[i] >= n)
return cout << "NE", 0;
if(u[i] != -1)
if(l[u[i]] > i or r[u[i]] > n - i - 1)
return cout << "NE", 0;
if(d[i] != -1)
if(l[n - 1 - d[i]] > i or r[n - 1 - d[i]] > n - i - 1)
return cout << "NE", 0;
if(l[i] != -1)
if(d[l[i]] > n - i - 1 or u[l[i]] > i)
return cout << "NE", 0;
if(r[i] != -1)
if(u[n - 1 - r[i]] > i or d[n - 1 - r[i]] > n - i - 1)
return cout << "NE", 0;
}
cout << "DA";
return 0;
}
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