题解 | #Fibonacci#
Fibonacci
https://www.nowcoder.com/practice/17ad6908e36a49f4b06ea96936e8bb25
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
int a=0,b=1;
while(n--){
int c=a+b;
a=b;
b=c;
}
cout<<a<<endl;
}
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