Problems
Adjacent Bit Counts
Adjacent Bit Counts
For a string of \textbf{n} bits \textbf{x_1}, \textbf{x_2}, \textbf{x_3}, …, \textbf{x_n}, the adjacent bit count of the string (\textbf{AdjBC(x)}) is given by
\textbf{x_1·x_2 + x_2·x_3 + x_3·x_4 + … + x_\{n-1\}·x_n}
which counts the number of times a \textbf{1} bit is adjacent to another \textbf{1} bit. For example:
\textbf{AdjBC(011101101) = 3AdjBC(111101101) = 4AdjBC(010101010) = 0}
Write a program which takes as input integers \textbf{n} and \textbf{k} and returns the number of bit strings \textbf{x} of \textbf{n} bits (out of \textbf{2^n}) that satisfy \textbf{AdjBC(x) = k}. For example, for \textbf{5} bit strings, there are \textbf{6} ways of getting \textbf{AdjBC(x) = 2}:
\textbf{11100, 01110, 00111, 10111, 11101, 11011}
\InputFile
The first line of input contains a single integer \textbf{P}, (\textbf{1} ≤ \textbf{P} ≤ \textbf{1000}), which is the number of data sets that follow. Each data set is a single line that contains the data set number, followed by a space, followed by a decimal integer giving the number (\textbf{n}) of bits in the bit strings, followed by a single space, followed by a decimal integer (\textbf{k}) giving the desired adjacent bit count. The number of bits (\textbf{n}) will not be greater than \textbf{100} and the parameters \textbf{n} and \textbf{k} will be chosen so that the result will fit in a signed \textbf{32}-bit integer.
\OutputFile
For each data set there is one line of output. It contains the data set number followed by a single space, followed by the number of \textbf{n}-bit strings with adjacent bit count equal to \textbf{k}.
Input example #1
10 1 5 2 2 20 8 3 30 17 4 40 24 5 50 37 6 60 52 7 70 59 8 80 73 9 90 84 10 100 90
Output example #1
1 6 2 63426 3 1861225 4 168212501 5 44874764 6 160916 7 22937308 8 99167 9 15476 10 23076518