Latvian National 2025 Grade 10 Problem 1
Do there exist integers $a, b, c, d$ such that
$$|a - b| + |b - c| + |c - d| + |d - a| = 2025?$$
Replace sorry in the template below with your solution.
See Answer Bank for acceptible answer declarations.
Mathlib version used by the checker is v4.29.0.
import Mathlib.Algebra.Group.Int.Defs import Mathlib.Algebra.Order.Group.Unbundled.Abs def answer : Prop := sorry theorem solution : (∃ a b c d : ℤ, |a - b| + |b - c| + |c - d| + |d - a| = 2025) ↔ answer := sorry
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