Day 3 submission

Day 3/Marcus/cpp/part1.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+    string in;
+    
+    int counts[12] = {0};
+	
+	int result = 0;
+    
+    while(cin >> in) for(int i = 0; i < 12; i++) counts[i] = (in[i]=='1')?(counts[i]+1):(counts[i]-1);
+    
+    for(int i = 0; i < 12; i++) result |= ((counts[i]>0)?1:0)<<(11-i);
+    
+    cout << result*(result^0x0FFF) << endl;
+
+    return 0;
+}