Inspired by proconio-rs, I wrote ProconIO.jl to handle inputs for competitive programming contests.
The usage is similar to proconio-rs. You need to specify the variable name and its structure.
@input a = Int
Multiple variables need to be nested in a block.
@input begin
a = Char
b = Float32
c = (Int, Char)
d = String
e = Bool
end
Arrays need to be specified in the form of [type; shape].
@input begin
a = [Int; 3]
b = [Float32; (2, 3)]
end
Complex structures can also be handled.
@input a = [(Int, [Int; (2, 2)], Char); (2, 2)]
In CP, the size of arrays is usually specified by the input itself. This can be handled by using variables already read in.
Note that ProconIO.jl follows Julia’s column-major convention, instead of the row-major which is commonly used in CP. So you may need to swap the row and column indices when reading the array.
@input begin
n = Int
m = Int
v = [Int; (m, n)]
end
If you prefer a row-major flavor, you can use a vector of vectors instead.
@input begin
n = Int
m = Int
v = [[Int; m]; n]
end
Sometimes the input is a vector of variable-length vectors. This can be handled by leaving out the shape and reading it from the input instead. The following code reads in a vector of n variable-length vectors.
@input begin
n = Int
v = [[Int; ]; n]
end
