def qtdCam (x1,x2,y1,y2):
if x1 == y1 or x2 == y2:
return 1
aux = qtdCam(x1+1, x2,y1, y2)
return aux + qtdCam(x1,x2+1,y1,y2)
qtd = int(input())
ret = 0
for i in range(qtd):
let = input().split()
x1 = let[0]
x2 = let[1]
y1 = let[2]
y2 = let[3]
a = (int(y1)-int(x1))*(int(y2)-int(x2)) + 1
print(a)
// Online C++ compiler to run C++ program online
#include <bits/stdc++.h>
using namespace std;
int main() {
int t;
cin>>t;
while(t--){
long long x1 , y1 , x2 , y2;
cin>>x1>>y1>>x2>>y2;
long long ans = (x2 - x1) * (y2 - y1) + 1;
cout<<ans<<endl;
}
return 0;
}765A - Neverending competitions | 1303A - Erasing Zeroes |
1005B - Delete from the Left | 94A - Restoring Password |
1529B - Sifid and Strange Subsequences | 1455C - Ping-pong |
1644C - Increase Subarray Sums | 1433A - Boring Apartments |
1428B - Belted Rooms | 519B - A and B and Compilation Errors |
1152B - Neko Performs Cat Furrier Transform | 1411A - In-game Chat |
119A - Epic Game | 703A - Mishka and Game |
1504C - Balance the Bits | 988A - Diverse Team |
1312B - Bogosort | 1616B - Mirror in the String |
1660C - Get an Even String | 489B - BerSU Ball |
977C - Less or Equal | 1505C - Fibonacci Words |
1660A - Vasya and Coins | 1660E - Matrix and Shifts |
1293B - JOE is on TV | 1584A - Mathematical Addition |
1660B - Vlad and Candies | 1472C - Long Jumps |
1293D - Aroma's Search | 918A - Eleven |