#include <iostream> #include <iomanip> #include <cmath> using namespace std; int main( ) { int n; double a[90]; a[0]=1; a[1]=1; for(int i=2; i<90; i++) { a[i]=a[i-1]+a[i-2]; } while(cin >> n) { if(n==0) break; cout << a[n] <<endl; } return 0; } |
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