diff --git a/George ad accommodation b/George ad accommodation
new file mode 100644
index 0000000..95dd979
--- /dev/null
+++ b/George ad accommodation	
@@ -0,0 +1,11 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main(){
+    int n,c=0,a,b;cin>>n;
+    while(n--){
+        cin>>a>>b;
+        if((b-a)>=2){c++;}
+    }
+    cout<<c<<endl;
+    return 0;
+}