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Fibonacci_De_Quy.cpp
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// Fibonacci_De_Quy.cpp #include <bits/stdc++.h> using namespace std; int f(int n) { if (n < 3) return 1; return f(n - 1) + f(n - 2); } int main() { int n; cout << "Nhap n: "; cin >> n; cout << "Ket qua: " << f(n); return 0; }