n = gets.chomp.to_i
if n == 1
    puts "100"
    exit
end
a = gets.chomp.split(" ").map(&:to_i)
average_sum = n * 100
ans = a.inject(:+)
count = 0
0.upto(average_sum) do |i|
    next if i % n != 0
    next if i < ans
    ten = i - ans
    next if ten > 100
    count += 1
end
puts count