C# HashSet Easy and Fast. ✅❇️
\npublic bool FindSubarrays(int[] nums) {\n        if (nums.Length < 3) return false;\n        \n        var set = new HashSet<int>();\n        for (var i = 0; 
```\npublic bool FindSubarrays(int[] nums) {\n        if (nums.Length < 3) return false;\n        \n        var set = new HashSet<int>();\n        for (var i = 0; i < nums.Length - 1; i++)\n        {\n            var sum = 0;\n            sum = nums[i] + nums[i+1];\n            if (set.Contains(sum)) return true;\n            set.Add(sum);\n        }\n        return false;\n    }\n```
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