This is an interactive problem. The editorial said that the first pair $$$(l0, r0)$$$ that satisfied $$$l0 \bmod a > r0 \bmod a$$$ is also statisfied the inequality $$$l0 \le a \le r0$$$. How to proof it? It is obviously some example like $$$l0 = 16, r0 = 32, a = 6$$$, it is also statisfied the conditions but I don't know if the pair is the first.
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