diff --git a/fashionableecodeforces.cpp b/fashionableecodeforces.cpp
new file mode 100644
index 0000000..86706b2
--- /dev/null
+++ b/fashionableecodeforces.cpp
@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+using namespace std;
+ 
+int main()
+{
+    int t,i,n;
+    cin>>t;
+    for(i=0;i<t;i++){
+        cin>>n;
+        if(n%4==0){
+            cout<<"YES\n";
+        }
+        else{
+            cout<<"NO\n";
+        }
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/flippinggamecodeforces.cpp b/flippinggamecodeforces.cpp
new file mode 100644
index 0000000..19ab2c1
--- /dev/null
+++ b/flippinggamecodeforces.cpp
@@ -0,0 +1,16 @@
+#include<bits/stdc++.h>
+using namespace std;
+ 
+int main(){
+     int n,a,c=0,x=0,m=0,r=-1;
+     cin>>n;
+     while(n--)
+     {
+          cin>>a;
+          c+=a;
+          x+=1-a*2;
+          r=max(r,x-m);
+          m=min(x,m);
+     }
+     cout<<r+c;
+}
\ No newline at end of file
diff --git a/vanyaandcubes.cpp b/vanyaandcubes.cpp
new file mode 100644
index 0000000..3243846
--- /dev/null
+++ b/vanyaandcubes.cpp
@@ -0,0 +1,15 @@
+#include<bits/stdc++.h>
+using namespace std;
+ 
+int main(){
+     int n,c=1,i=1,l;
+     cin>>n;
+     while(n>=c)
+     {
+          i++;
+          l=(i*(i+1))/2;
+          c+=l;
+     }
+     cout<<i-1;
+     return 0;
+}
\ No newline at end of file