25 lines
264 B
C++
25 lines
264 B
C++
#include<iostream>
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#include<vector>
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using namespace std;
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int fbnqs(int n1,int n2,int deepth){
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if(deepth == 1){
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return n1 + n2;
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}
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else{
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return fbnqs(n2,n1+n2,deepth -1);
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}
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}
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int main(){
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int n;
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cin >> n;
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cout << fbnqs(1,1,n - 2);
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return 0;
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}
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