diff --git a/2598. Smallest Missing Non-negative Integer After Operations b/2598. Smallest Missing Non-negative Integer After Operations
new file mode 100644
index 0000000..11444fe
--- /dev/null
+++ b/2598. Smallest Missing Non-negative Integer After Operations	
@@ -0,0 +1,25 @@
+class Solution {
+public:
+    int findSmallestInteger(vector<int>& nums, int value) {
+        // Store the frequency of element%value (non-negative remainder)
+        vector<int> freq(value, 0);
+        
+        for (int num : nums) {
+            // Convert negative remainders to positive
+            int mod = ((num % value) + value) % value;
+            freq[mod]++;
+        }
+
+        int mex = 0;
+        while (true) {
+            int mod = mex % value;
+            if (freq[mod] > 0) {
+                freq[mod]--;
+                mex++;
+            } else {
+                break;
+            }
+        }
+        return mex;
+    }
+};