2245.cpp

这些是我到目前在PKU上做出的题目

#include <iostream.h>
int main()
{int p[6],a[49],k,i,j;
 void play(int n,int st,int k,int p[],int a[]);
 cin>>k;j=0;
 while (k!=0)
 {for (i=0;i<k;i++) cin>>a[i];
  if (j==1) cout<<"\n";j=1;  
  play(0,0,k,p,a);
  cin>>k;}return 0;}
void play(int n,int st,int k,int p[],int a[])
{if (n==6) 
{cout<<a[p[0]]<<" "<<a[p[1]]<<" "<<a[p[2]]<<" "<<a[p[3]]<<" ";
 cout<<a[p[4]]<<" "<<a[p[5]]<<"\n";}
 else
 {p[n]=st;
 while (p[n]<=k-6+n) {play(n+1,p[n]+1,k,p,a);p[n]++;}}
}