题解 | #统计每个月兔子的总数#
统计每个月兔子的总数
https://www.nowcoder.com/practice/1221ec77125d4370833fd3ad5ba72395
#include <iostream>
using namespace std;
int main() {
int fir=1;
int sec=0;
int n=0;
cin>>n;
int tem = 0;
//cout<<1<<" fir:"<<fir<<" sec:"<<sec<<endl;
for(int i = 2;i<=n;i++){
tem = sec;
sec += fir;
fir = 0;
fir = tem;
//cout<<i<<" fir:"<<fir<<" sec:"<<sec<<endl;
}
cout<<fir+sec;
}
// 64 位输出请用 printf("%lld")
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