#include <bits/stdc++.h>
#define all(a) a.begin(), a.end()
#define popcount(x) __builtin_popcountll(x)
using namespace std;
using namespace chrono;
vector<long long> mosaic(
vector<int> X, vector<int> Y,
vector<int> T, vector<int> B,
vector<int> L, vector<int> R
) {
int n = X.size();
int q = T.size();
vector<long long> ans(q);
for (int i = 0; i < q; i++) {
int r1 = T[i];
int c1 = L[i];
int r2 = B[i];
int c2 = R[i];
if (r1 == 0) r1++;
if (c1 == 0) c1++;
if (r1 > r2 || c1 > c2) {
ans[i] = 0;
continue;
}
long long area = max(0LL, 1LL*(r2 - r1 + 1)*(c2 - c1 + 1));
area /= 2;
if (r1 % 2 == c1 % 2 && area % 2) area++;
ans[i] = area;
}
return ans;
}
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