OJ Board

Code: Select all

#include<iostream>
using namespace std;
int main()
{
    long long int n,i,a[100000];
    while(cin>>n)
    {
        if(n==0)
        break;
        a[1]=1;
        a[2]=2;
        for(i=3;i<=n;i++)
        a[i]=a[i-1]+a[i-2];
        cout<<a[n]<<endl;
    }
    return 0;
}