using System;
 
class Solution
{
    public int solution(int[] A)
    {
        int n = A.Length;
        int ans = int.MaxValue;                          // ✅ Initial large value
        for (int i = 0; i < n - 1; i++)
        {
            if (A[i] * A[i + 1] >= 0)                    // ✅ Only consider non-negative products
            {
                ans = Math.Min(ans, A[i] * A[i + 1]);
            }
        }
        return ans;
    }
 
    // Main method for testing
    public static void Main()
    {
        Solution sol = new Solution();
 
        int[] test1 = { 1, 4, 4 };
        Console.WriteLine(sol.solution(test1));  // Expected output: 4
 
        int[] test2 = { -5, -2, 3, 6 };
        Console.WriteLine(sol.solution(test2));  // Expected output: 10 (from -5 * -2)
 
        int[] test3 = { -3, 0, 4, 5 };
        Console.WriteLine(sol.solution(test3));  // Expected output: 0 (from 0 * 4)
 
        int[] test4 = { -1, 2, -3, 4 };
        Console.WriteLine(sol.solution(test4));  // Expected output: 8 (from -2 * -4 if such existed)
 
        int[] test5 = { -2, -1, 0, 1, 2 };
        Console.WriteLine(sol.solution(test5));  // Expected output: 0 (from -1 * 0 or 0 * 1)
 
        int[] test6 = { 1, 4, 4, 1 };
        Console.WriteLine(sol.solution(test6)); 
    }
}
 

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