Problem link: https://codeforces.com/problemset/problem/1478/C
In the editorial its given that di exist twice. The proof is given for the existence of pair. Why can't there be 4 values of same di?
Need Help: Why can't di exist more than 2 times?
Problem link: https://codeforces.com/problemset/problem/1478/C
In the editorial its given that di exist twice. The proof is given for the existence of pair. Why can't there be 4 values of same di?
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