Fibonacci Again
Problem Description
There are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2).
Input
Input consists of a sequence of lines, each containing an integer n. (n < 1,000,000).
Output
Print the word "yes" if 3 divide evenly into F(n).
Print the word "no" if not.
Sample Input
0 1 2 3 4 5
Sample Output
no no yes no no no
F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2).给定一个n,f[n]%3==0 就输出yes,否则输出no。不能直接做的,不然超出数的范围。我打出0~40的数跟可不可以被3整除如下图所示:
你会发现,可以的n-2可以被4整除。代码如下:
#include<cstdio> int main(){ int n; while(scanf("%d",&n)!=EOF){ if((n-2)%4==0) printf("yes\n"); else printf("no\n"); } return 0; }
另外记录一下最近在HDU A题的情况:
版权声明:本文为博主原创文章,未经博主允许不得转载。
时间: 2024-11-20 10:10:19