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)); } }