PROGRAMMING:Definite integral of youyou Xuejie
One day, youyou Xuejie felt bored and decided to find an interesting thing to do. Suddenly, he saw a calculus book on his desk, so he wanted to find Huahua to do his calculus problem, but he knew he couldn't do it too hard, otherwise he might not be able to work it out. So he thought of a way to give the upper limit and lower limit of the definite integral, and told that the highest degree of X in the definite integral is n times, and then gave the values of A0, A1, A2, A3, A4... An. For example, when n is 2, the subject of definite integral is a0x ^ 2 + a1x + A2.
###Input format:
There are t groups of test data (T < = 500). The first line represents the number of groups of test data. Then there are t groups of data. Input L, R, N in the first line of each group of data. L is the lower limit of the integral, R is the upper limit of the integral, and N is the highest degree of X- 10<=l,r,n<=10）
###Output format:
Each row outputs the solution of a group of definite integrals.
###Input example:
Here is a set of inputs. For example:
```in
two
0 3 2
1 1 1
-2 5 3
1 2 3 4
```
###Output example:
The corresponding output is given here. For example:
```out
sixteen point five zero
three hundred point four two
```
answer：If there is no answer, please comment
###Input format:
There are t groups of test data (T < = 500). The first line represents the number of groups of test data. Then there are t groups of data. Input L, R, N in the first line of each group of data. L is the lower limit of the integral, R is the upper limit of the integral, and N is the highest degree of X- 10<=l,r,n<=10）
###Output format:
Each row outputs the solution of a group of definite integrals.
###Input example:
Here is a set of inputs. For example:
```in
two
0 3 2
1 1 1
-2 5 3
1 2 3 4
```
###Output example:
The corresponding output is given here. For example:
```out
sixteen point five zero
three hundred point four two
```
answer：If there is no answer, please comment