costly_bigints.jl

function foo(n::Integer)
    x::Int = 0
    t1::Float64 = @elapsed for i in 1:n
        x = x + 1
    end
    @printf "Int: %f\n" t1

    y::BigInt = BigInt(0)
    t2::Float64 = @elapsed for i in 1:n
        y = y + BigInt(1)
    end
    @printf "BigInt: %f\n" t2
end

foo(100_000_000)