题解 | #N阶楼梯上楼问题#
N阶楼梯上楼问题
https://www.nowcoder.com/practice/c978e3375b404d598f1808e4f89ac551
#include<iostream>
using namespace std;
int fabonacci(int n){
if(n==1||n==2)
return n;
return fabonacci(n-1)+fabonacci(n-2);
}
int main()
{
int n;
while(scanf("%d",&n)!=EOF){
printf("%d\n",fabonacci(n));
}
}
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