diff --git a/count.cpp b/count.cpp
new file mode 100644
index 0000000..8e52cd2
--- /dev/null
+++ b/count.cpp
@@ -0,0 +1,13 @@
+int solve(int A, int B, int C, int D) {
+    
+    int temp = C, count = 0;
+    if(C%D != 0){
+        temp+=D;
+        temp -=((C)%D);
+    }
+    while(temp <= B-A){
+        temp += D;
+        count += 1;
+    }
+    cout<< count;
+}