Geeksforgeeks · Technology · 2026-08-16
Find Lattice Points in the Circle
Given an integer r, representing the radius of a circle centered at the origin (0, 0), find the total number of lattice points lying on the circumference of the circle. A lattice point is a point in 2-D space whose coordinates are both integers.Examples: Input: r = 5Output: 12Explanation: The lattice points are
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