题解 | #统计每个月兔子的总数#

#include <iostream>
#include<vector>
using namespace std;

int main()
{
    int n = 0;
    cin>> n;
    vector<int> ivec;
    ivec.push_back(0);
    ivec.push_back(1);
    for(int i = 2; i <=n;++i)
        {
            ivec.push_back(ivec[i-1]+ivec[i-2]);
        }    
    cout << ivec[n] << endl;
    return 0;


}