HDU 5167 Fibonacci

Fibonacci

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 1525    Accepted Submission(s): 387

Problem Description

Following is the recursive definition of Fibonacci sequence:

Fi=⎧⎩⎨01Fi−1+Fi−2i = 0i = 1i > 1

Input

T shows there are T test cases below. ( T≤100,000)
For each test case , the first line contains a integers n , which means the number need to be checked.
0≤n≤1,000,000,000

Output

For each case output "Yes" or "No".

Sample Input

3 4 17 233

Sample Output

Yes No Yes

Source

​​BestCoder Round #28 ​​

//斐波那契数增长较快 
#include<iostream>
#include<stdio.h>
#include<algorithm>
#include<set>
using namespace std;
#define LL __int64
LL num[50]; 
set<LL> s;
set<LL>::iterator it;

int main()
{
  int i,j,t,a;
  LL x;
  num[0]=0;
  num[1]=1;
  s.insert(0);
  s.insert(1);
  
  for(i=2;i<=47;i++)
  {
    num[i]=num[i-1]+num[i-2];
    s.insert(num[i]);
  } 
  
  for(it=s.begin();it!=s.end();it++)
  {
    for(j=3;j<=45;j++)
    {
      x=*it*num[j];
      if(x<=1000000000)
        s.insert(x);
    }
  }
  scanf("%d",&t);
  while(t--)
  {
    scanf("%d",&a);
    if(s.find(a)!=s.end())
      printf("Yes\n");
    else
      printf("No\n");
  }
  return 0;
}