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39 lines
766 B
C++
39 lines
766 B
C++
#include <iostream>
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#include <algorithm>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 255;
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int t, n, a[N][N];
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> t;
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while (t--) {
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cin >> n;
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for (int i = 1; i <= n << 1; i++) {
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for (int j = 1; j <= n << 1; j++) {
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cin >> a[i][j];
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}
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}
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long long ans = 0;
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for (int i = n + 1; i <= n + n; i++) {
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for (int j = n + 1; j <= n + n; j++) {
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ans += a[i][j];
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}
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}
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cout << ans + std::min({a[1][n + 1], a[1][n + n], a[n][n + 1], a[n][n + n], a[n + 1][n], a[n + 1][1], a[n + n][1], a[n + n][n]}) << endl;
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}
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return 0;
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}
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