题解 | #吃糖果#
吃糖果
https://www.nowcoder.com/practice/72015680c32b449899e81f1470836097
#include<iostream>
using namespace std;
const int N = 20;
int arr[N];
int main(void)
{
int n;
cin >> n;
arr[0] = 1;
arr[1] = 2;
for(int i = 2;i < n;i++) arr[i] = arr[i - 1] + arr[i - 2];
cout << arr[n - 1] << endl;
return 0;
}
