杭电2041题

//超级楼梯
//思路：使用递推求解 p[n] = p[n-1] + p[n-2]
#include <iostream>
using namespace std;
int main()
{
 int case_number;
 cin>>case_number;
 for(int i=0;i<case_number;i++)
 {
  int m;
  cin>>m;
  if(m==2)
   cout<<1<<endl;
  else if(m==3)
   cout<<2<<endl;
  else
  {
   int *p = new int[m];
   p[0] = 0;
   p[1] = 1;
   p[2] = 2;

   for(int j=3;j<m;j++)
   {
    p[j] = p[j-1] + p[j-2];
   }
   //注意：输的是p[j-1]而不是p[j]
   cout<<p[j-1]<<endl;
   delete []p;
  }  
 }
 return 0;
}