Changed the folder structure of codeforces problemsets

codeforces/problemsets/watermelon/watermelon.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <cmath>
+
+using namespace std;
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int n;
+    cin >> n;
+
+    if(n > 2 && n % 2 == 0){
+        cout << "YES";
+    } else{
+        cout << "NO";
+    }
+
+    cout << flush;
+
+    return 0;
+}