diff --git a/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Andrew and Max.cpp b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Andrew and Max.cpp
new file mode 100644
index 0000000..32d5791
--- /dev/null
+++ b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Andrew and Max.cpp	
@@ -0,0 +1,17 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main(){
+    int tc;
+    double x,y,z,a,b,c;
+    cin>>tc;
+    while(tc--){
+        cin>>x>>y>>z;
+        a=(x+z-y)/2.0;
+        b=(x-z+y)/2.0;
+        c=(y+z-x)/2.0;
+        printf("%.2lf",2*(a*b+a*c+b*c));
+        cout<<endl;
+    }
+    return 0;
+}
+
diff --git a/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Read me.md b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Read me.md
new file mode 100644
index 0000000..e8cf903
--- /dev/null
+++ b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/Read me.md	
@@ -0,0 +1,2 @@
+#### Challenge link
+[june_easy_challenge_15](https://www.hackerearth.com/challenge/competitive/june-easy-15/problems/)
diff --git a/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/ZeroShark.cpp b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/ZeroShark.cpp
new file mode 100644
index 0000000..4892e2d
--- /dev/null
+++ b/HackerEarth/hackerearth/hackerEarthChallenges/june_Easy_Challenge15/ZeroShark.cpp
@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+#define mod 1000000007
+using namespace std;
+typedef long long ll;
+int main(){
+    ll tc,n,ans[100001][2];
+    cin>>tc;
+    ans[1][1]=0,ans[1][0]=2,ans[2][1]=1,ans[2][0]=3,ans[0][0]=1,ans[0][1]=0;
+    for(int i=3;i<100001;i++){
+        ans[i][1]=(ans[i-1][1]+ans[i-2][1]+ans[i-3][0])%mod;
+        ans[i][0]=(ans[i-1][0]+ans[i-2][0])%mod;
+    }
+    while(tc--){
+        cin>>n;
+        cout<<ans[n][1]<<"\n";
+    }
+    return 0;
+}