Three families share a garden. They usually clean the garden together at the end of each week, but last week, family C was on holiday, so family A spent 5 hours, family B spent 4 hours and had everything done. After coming back, family C is willing to pay $90 to the other two families. How much should family A get? You may assume both families were cleaning at the same speed.

90/(5+4)∗5= $90/(5+4)\ast 5=$50? No no no. Think hard. The correct answer is  60.Whenyoufiguredoutwhy,answerthefollowingquestion:IffamilyAandBspentxandyhoursrespectively,andfamilyCpaid $60.Whenyoufiguredoutwhy,answerthefollowingquestion:IffamilyAandBspentxandyhoursrespectively,andfamilyCpaid$z, how much should family A get? It is guaranteed that both families should get non-negative integer dollars.

WARNING: Try to avoid floating-point numbers. If you really need to, be careful!

Input 

The first line contains an integer T (   T100), the number of test cases. Each test case contains three integers x,    y,    z (   1x,    y10,    1z1000).   

Output 

For each test case, print an integer, representing the amount of dollars that family A should get.   

Sample Input 

2
5 4 90
8 4 123

Sample Output 

60
123


题目大意：水题，不解释。推出计算公式瞬秒！

 1 #include<iostream>
 2 #include<cstdio>
 3 using namespace std;
 4 int main(){
 5     int T;cin>>T;
 6     while(T--){
 7         int x,y,z;
 8         cin>>x>>y>>z;
 9         cout<<(3*x*z)/(x+y)-z<<'\n';
10     }return 0;
11 }

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