func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int fuckAbs(long long int a) { return a >= 0 ? a : -a; }   int main(void) {     long long int t, n, m, ans, dx, dy, sx, sy, x1, y1, x2, y2;     cin >> t;     while (t--) {       cin >> n >> m >> x1 >> y1 >> x2 >> y2;       ans = n * m;       dx = n - max(x1, x2) + min(x1, x2);       dy = m - max(y1, y2) + min(y1, y2);       ans -= dx * dy * 2;       sx = sy = 0;       if (dx > fuckAbs(x1 - x2)) sx = dx - fuckAbs(x1 - x2);       if (dy > fuckAbs(y1 - y2)) sy = dy - fuckAbs(y1 - y2);       ans += sx * sy;       cout << ans << endl;     }     return 0;   }   