Fibonacci Again
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 41156 Accepted Submission(s): 19705
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
Author
Leojay
我说这个题目想当有意思,首先上去就做,压根就没考虑数组溢出n到几百就不行了;最关键的一点是题目要求一种是与否的判断,那就好好找找规律,结果直接让他输出100个f【n】看是否能被3整除的数据是如何分布的,立刻就遇到了惊喜!请看:
#include<iostream> using namespace std; int main() { int n; int *ls=new int [10000000]; ls[0]=7;ls[1]=11; for(int i=2;i<100;i++) { ls[i]=ls[i-1]+ls[i-2]; /*if(ls[i]%3==0) cout<<"yes"<<" "; else cout<<"no"<<" ";*/ } while(cin>>n) { printf((n-1)%4==1?"yes\n":"no\n"); } //printf(ls[n]%3?"no":"yes"); return 0; }
结果AC代码能猜出几行么!!呵呵呵
#include<iostream> using namespace std; int main() { int n; while(cin>>n) { printf((n-1)%4==1?"yes\n":"no\n"); } return 0; }
时间: 2024-10-21 13:03:45