杭电acm 2070

Fibbonacci Number

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 12577    Accepted Submission(s): 6348

Problem Description

Your objective for this question is to develop a program which will generate a fibbonacci number. The fibbonacci function is defined as such:

f(0) = 0
f(1) = 1
f(n) = f(n-1) + f(n-2)

Your program should be able to handle values of n in the range 0 to 50.

 

Input

Each test case consists of one integer n in a single line where 0≤n≤50. The input is terminated by -1.

 

Output

Print out the answer in a single line for each test case.

 

Sample Input

3 4 5 -1

Sample Output

2 3 5

Hint

Note:

you can use 64bit integer: __int64

注意用__int64就行了

#include
int main()
{
    __int64 F[50],n,i;
    F[0]=0;F[1]=1;
    while(scanf("%I64d",&n)!=EOF&&n!=-1)
    {
        if(n>=2)
        {
            for(i=2;i<=n;i++)
                F[i]=F[i-1]+F[i-2];
        }
        printf("%I64d\n",F[n]);
    }
        return 0;
}