2013.cpp

这些是我到目前在PKU上做出的题目

#include <iostream.h>
int main()
{
	char a[20][30];
	 int n,i,j;
	cin>>n;j=1;
	while (n!=0)
	{
		for (i=1;i<=n;i++) 
			cin>>a[i];
		cout<<"SET "<<j<<"\n";
		for (i=1;i<=n;i=i+2) 
			cout<<a[i]<<"\n";
		for (i=n/2*2;i>=2;i=i-2) 
			cout<<a[i]<<"\n";
		j=j+1;cin>>n;
	}
return 0;
}