编程介的小学生 2017-06-09 15:03 采纳率: 20.5%
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Zhu’s Math Problem

Problem Description
Zhu is a powerful ACMer/OverWatcher, now a salt-fish comes to ask Zhu a difficult problem. Zhu thinks that problem is so easy, so he wants to know whether you can solve it?
The problem content are as follows.
You are given four integers A , B , C , D , there are many different (a,b,c,d) satisfy a+c>b+d && a+d≥b+c && 0≤a≤A && 0≤b≤B && 0≤c≤C && 0≤d≤D ?

Input
First Line is an positive integer T(T≤1000) , represents there are T test cases.
Four each test:
The first line contain four integers A , B , C , D.
You can assume that 0≤A,B,C,D≤1018

Output
For each test case, output an positive integer represents answer, because the answer may be large , so you are only need to output answer mod 109+7

Sample Input
1
2 1 1 1

Sample Output
10

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  • threenewbee 2017-06-28 15:48
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    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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