diff --git a/Brain's Photos b/Brain's Photos
new file mode 100644
index 0000000..5f3a001
--- /dev/null
+++ b/Brain's Photos	
@@ -0,0 +1,30 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int n,m,i,j,flag=0;
+	cin>>n>>m;
+	char A[n][m];
+	for(i=0;i<n;i++)
+	{
+	    for(j=0;j<m;j++)
+	    {
+	        cin>>A[i][j];
+	    }
+	}
+	for(i=0;i<n;i++)
+	{
+	    for(j=0;j<m;j++)
+	    {
+	        if(A[i][j]=='C'||A[i][j]=='Y'||A[i][j]=='M')
+	        {
+	            flag=1;
+	            break;
+	        }
+	    }
+	}
+	if(flag==1)
+	cout<<"#Color";
+	else
+	cout<<"#Black&White";
+	return 0;
+}
diff --git a/Dreamoon and Stairs b/Dreamoon and Stairs
new file mode 100644
index 0000000..2f87459
--- /dev/null
+++ b/Dreamoon and Stairs	
@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main()
+{
+  int n,m,a;
+  cin>>n>>m;
+  if(m>n)
+  {
+   cout<<"-1";
+   return 0;
+  }
+  if(n%2==0)
+  a=n/2;
+  else
+  a=(n+1)/2;
+  if(a%m!=0)
+  a=a+(m-a%m);
+  cout<<a;
+}
diff --git a/Holiday Of Equality b/Holiday Of Equality
new file mode 100644
index 0000000..2143d7b
--- /dev/null
+++ b/Holiday Of Equality	
@@ -0,0 +1,24 @@
+#include <iostream>
+using namespace std;
+
+int main() {
+    int n,i,max,s;
+	cin>>n;
+	int A[n];
+	for(i=0;i<n;i++)
+	{
+	    cin>>A[i];
+	}
+	max=0;s=0;
+	for(i=0;i<n;i++)
+	{
+	    if(A[i]>max)
+	    max=A[i];
+	}
+	for(i=0;i<n;i++)
+	{
+	    s=s+(max-A[i]);
+	}
+	cout<<s;
+	return 0;
+}