diff --git a/2894. Divisible and Non-divisible Sums Difference b/2894. Divisible and Non-divisible Sums Difference
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+++ b/2894. Divisible and Non-divisible Sums Difference	
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+class Solution {
+public:
+    int differenceOfSums(int n, int m) {
+        // we need to find S(n)-2*(divisibles)
+
+        // no of divisibles
+        int x=n/m;
+
+        return (n*(n+1))/2-2*m*((x*(x+1))/2);
+    }
+};