Submission #2545801

---

Source Code Expand

t, K = gets.split.map(&:to_i)
goal = 2 * 10**12

if K == 0
    puts goal - t
    exit
end

i = 0
loop do
    if t >= goal
        puts i
        exit
    else
        t += 1 + K * t
        i += 1
    end
end

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