#!/bin/ruby

require 'json'
require 'stringio'

# Complete the lagDuration function below.
def lagDuration(h1, m1, h2, m2, k)
    # Return an integer denoting the duration of time in minutes by which the clock has been lagging.
hm1 = h1 * 60 + m1
  hm2 = h2 * 60 + m2
  hme = hm1 + k * 60
  hme - hm2
end

fptr = File.open(ENV['OUTPUT_PATH'], 'w')

q = gets.to_i

q.times do |q_itr|
    h1M1H2M2 = gets.rstrip.split

    h1 = h1M1H2M2[0].to_i

    m1 = h1M1H2M2[1].to_i

    h2 = h1M1H2M2[2].to_i

    m2 = h1M1H2M2[3].to_i

    k = gets.to_i

    result = lagDuration h1, m1, h2, m2, k

    fptr.write result
    fptr.write "\n"
end

fptr.close()