Need Help: Why can't di exist more than 2 times?

Правка en1, от simp_pro, 2022-07-20 10:10:21

Problem link: https://codeforces.net/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?

Теги help

История

 
 
 
 
Правки
 
 
  Rev. Язык Кто Когда Δ Комментарий
en1 Английский simp_pro 2022-07-20 10:10:21 247 Initial revision (published)