delete pics to save space

history_source/ccf 基础篇/U1/1.6.5.cpp

@@ -0,0 +1,35 @@
+#include<iostream> 
+#include<cmath>
+using namespace std; 
+int log2(int y)
+{
+	return log(y)/log(2);
+}
+void wrote(int sr)
+{
+	bool f=0;
+	for(int i=log2(sr);sr>0;i--)
+	{
+		if(sr>=pow(2,i)) 
+		{
+			if(f) cout<<"+";
+			f=1;
+			cout<<"2(";
+			switch(i)
+			{
+				case 1:cout<<"2(0)";break;
+				case 2:cout<<"2";break;
+				default:wrote(i);
+			}
+			cout<<")";
+			sr-=pow(2,i);
+		}
+	}
+}
+int main()
+{
+	int n;
+	cin>>n;
+	wrote(n);
+	return 0;
+}