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;
struct DSU{
vector<int> v;
vector<bool> zero;
int mx;
void init(int n){
v.assign(n, -1); mx = 0;
zero.assign(n, false);
}
int get(int x){return v[x] < 0 ? x : v[x] = get(v[x]);}
void unite(int x, int y){
x = get(x); y = get(y);
if(x == y) return;
if(v[x] > v[y]) swap(x, y);
v[x] += v[y]; v[y] = x; mx = max(mx, -v[x]);
}
void setZero(int i){
zero[i] = true;
int n = (int)v.size();
if(zero[(i+n-1)%n]) unite(i, (i+n-1)%n);
if(zero[(i+1)%n]) unite(i, (i+1)%n);
}
};
bool isInside(int lx, int rx, int ly, int ry, pair<int, int> p){
if(lx <= p.first && rx >= p.first && ly <= p.second && ry >= p.second) return true;
return false;
}
int brute(int N, int M, int D, vector<pair<int, int>>& A, vector<pair<int, int>>& B){
int ans = 2e9;
for(int lx = 0; lx < 2 * D; lx++){
for(int rx = lx; rx < 2 * D; rx++){
for(int ly = 0; ly < 2 * D; ly++){
for(int ry = ly; ry < 2 * D; ry++){
bool gd = true;
for(int i = 0; i < N; i++){
if(!(isInside(lx, rx, ly, ry, A[i]) || isInside(lx, rx, ly, ry, {A[i].first+D, A[i].second}) ||
isInside(lx, rx, ly, ry, {A[i].first, A[i].second+D}) || isInside(lx, rx, ly, ry, {A[i].first + D, A[i].second + D}))){
gd = false;
}
}
for(int i = 0; i < M; i++){
if(!((ly <= B[i].second && B[i].second <= ry) ||
(ly <= B[i].second + D && B[i].second + D <= ry) ||
(lx <= B[i].first && B[i].first <= rx) ||
(lx <= B[i].first + D && B[i].first + D <= rx))){
gd = false;
}
}
if(gd) ans = min(ans, (rx - lx + 1) * (ry - ly + 1));
}
}
}
}
return ans;
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int N, M, D; cin >> N >> M >> D;
vector<pair<int, int>> A(N);
for(int i = 0; i < N; i++) cin >> A[i].first >> A[i].second;
vector<pair<int, int>> B(M);
for(int i = 0; i < M; i++) cin >> B[i].first >> B[i].second;
cout << brute(N, M, D, A, B) << "\n";
// vector<int> cols(D, 0);
// vector<vector<int>> rows(2*D);
// for(int i = 0; i < N; i++){
// cols[A[i].first]++;
// rows[A[i].second].push_back(i);
// }
// for(int i = 0; i < M; i++){
// cols[B[i].first]++;
// rows[B[i].second].push_back(N+i);
// }
// int ans = D * D;
// for(int startRow = 0; startRow < D; startRow++){
// int lft = N;
// vector<int> col = cols;
// DSU UF; UF.init(D);
// for(int i = 0; i < D; i++){
// if(col[i] == 0) UF.setZero(i);
// }
// for(int r = startRow; r < startRow + D; r++){
// for(int i : rows[r]){
// if(i < N){
// lft--;
// }else{
// i -= N;
// col[B[i].first]--;
// if(col[B[i].first] == 0) UF.setZero(B[i].first);
// }
// }
// if(lft > 0) continue;
// ans = min(ans, (r - startRow + 1) * (D - UF.mx));
// }
// for(int i : rows[startRow]){
// rows[startRow + D].push_back(i);
// }
// }
// cout << ans << "\n";
}
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